高分子材料专业英语第二版部分答案

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高分子材料工程专业英语课文翻译 (2)

高分子材料工程专业英语课文翻译Polymer Science and Polymer Engineering are closely related andoften used interchangeably. Polymer Science is concerned with the chemistry and physics of polymers, while Polymer Engineering teaches students how to design and manufacture polymer products. No matter which field you choose, there is constant innovation and new developments in the field of Polymer Science and Engineering.高分子科学和高分子工程密切相关，常常互换使用。

高分子科学研究聚合物的化学和物理学，而高分子工程则教授学生如何设计和制造聚合物产品。

无论您选择哪个领域，高分子科学和工程的领域中都不断有创新和新发展。

Polymers are large molecules that are made up of repeating units called monomers. These molecules are characterized by their high molecular weight, which gives them unique properties such as strength, elasticity, and durability. There are many types of polymers, including plastics, rubbers, and fibers.聚合物是由称为单体的重复单位组成的大分子。

高分子材料工程专业英语第二版教学设计

高分子材料工程专业英语第二版教学设计一、教学目标本次教学旨在让学生掌握高分子材料工程领域中常用的英语词汇和表达方式，以及相关的科技知识和应用能力，培养学生的英语听、说、读、写的综合语言能力，提高学生在国际化的学术交流中的竞争力。

二、教学内容本次教学覆盖高分子材料工程领域中常用的英语词汇和表达方式，例如：•高分子材料的分类和性质•高分子材料的加工和应用•高分子材料的分析和测试•高分子材料的新技术和前沿研究三、教学方法本次教学采用多种教学方法，包括：•讲授法：讲解高分子材料工程领域中常用的英语词汇和表达方式，以及相关的科技知识和实践应用能力。

•情景演练法：通过模拟高分子材料工程领域的实际工作情境，让学生在实践中掌握英语职业交流的技能，如会议报告、商务谈判等。

•课件演示法：通过演示PPT课件、视频教学等多媒体形式，加深学生对高分子材料工程领域常用英语表达方式和相关知识的理解。

四、教学评价为了对学生的学习效果进行评价，采用以下方式：1.课堂表现评价学生在课堂上的听讲、发言、互动等表现将被记录并用于教学评价。

2.作业评价课后布置与本次教学内容相关的作业，包括英语翻译、论文阅读与摘要写作等，对学生做出评价。

3.考试评价通过考试测试学生的英语听、说、读、写能力和对高分子材料工程领域英语表达方式的掌握情况。

五、教学资源•课件：通过电子课件、网络教学平台等方式，提供相关高分子材料工程英语课件和教学视频资源。

•书籍：根据教学需要，引进和推荐相关教材和参考书籍，为学生提供资源和知识载体。

六、课程总结本次教学将帮助学生掌握高分子材料工程领域中常用的英语表达方式和相关知识，提高学生的英语听、说、读、写的综合语言能力，为学生未来的学习和研究打下坚实的基础。

同时，通过实践活动和反馈机制，也将进一步改善教学质量和效果。

高分子材料工程专业英语词汇及部分课文翻译

专业英语词汇accordion 手风琴activation 活化（作用）addition polymer 加成聚合物，加聚物aggravate 加重，恶化agitation 搅拌agrochemical 农药，化肥Alfin catalyst 醇（碱金属）烯催化剂align 排列成行aliphatic 脂肪（族）的alkali metal 碱金属allyl 烯丙基aluminum alkyl 烷基铝amidation 酰胺化（作用）amino 氨基，氨基的amorphous 无定型的，非晶体的anionic 阴（负）离子的antioxidant 抗氧剂antistatic agent 抗静电剂aromatic 芳香（族）的arrangement （空间）排布，排列atactic 无规立构的attraction 引力，吸引backbone 主链，骨干behavior 性能，行为biological 生物（学）的biomedical 生物医学的bond dissociation energy 键断裂能boundary 界限，范围brittle 脆的，易碎的butadiene 丁二烯butyllithium 丁基锂calendering 压延成型calendering 压延carboxyl 羧基carrier 载体catalyst 催化剂，触媒categorization 分类（法）category 种类，类型cation 正[阳]离子cationic 阳（正）离子的centrifuge 离心chain reaction 连锁反应chain termination 链终止char 炭characterize 表征成为…的特征chilled water 冷冻水chlorine 氯（气）coating 涂覆cocatalyst 助催化剂coil 线团coiling 线团状的colligative 依数性colloid 胶体commence 开始，着手common salt 食盐complex 络合物compliance 柔量condensation polymer 缩合聚合物，缩聚物conductive material 导电材料conformation 构象consistency 稠度，粘稠度contaminant 污物contour 外形，轮廓controlled release 控制释放controversy 争论，争议conversion 转化率conversion 转化copolymer 共聚物copolymerization 共聚（合）corrosion inhibitor 缓释剂countercurrent 逆流crosslinking 交联crystal 基体，结晶crystalline 晶体，晶态，结晶的，晶态的crystalline 结晶的crystallinity 结晶性，结晶度crystallite 微晶decomposition 分解defect 缺陷deformability 变形性，变形能力deformation 形变deformation 变形degree of polymerization 聚合度dehydrogenate 使脱氢density 密度depolymerization 解聚deposit 堆积物，沉积depropagation 降解dewater 脱水diacid 二（元）酸diamine 二（元）胺dibasic 二元的dieforming 口模成型diffraction 衍射diffuse 扩散dimension 尺寸dimensional stability 尺寸稳定性dimer 二聚物（体）diol 二（元）醇diolefin 二烯烃disintegrate 分解，分散，分离dislocation 错位，位错dispersant 分散剂dissociate 离解dissolution 溶解dissolve 使…溶解distort 使…变形，扭曲double bond 双键dough （生）面团，揉好的面drug 药品，药物elastic modulus 弹性模量elastomer 弹性体eliminate 消除，打开，除去elongation 伸长率，延伸率entanglement 缠结，纠缠entropy 熵equilibrium 平衡esterification 酯化（作用）evacuate 撤出extrusion 注射成型extrusion 挤出fiber 纤维flame retardant 阻燃剂flexible 柔软的flocculating agent 絮凝剂folded-chain lamella theory 折叠链片晶理论formulation 配方fractionation 分级fragment 碎屑，碎片fringed-micelle theory 缨状微束理论functional group 官能团functional polymer 功能聚合物functionalized polymer 功能聚合物gel 凝胶glass transition temperature 玻璃化温度glassy 玻璃（态）的glassy 玻璃态的glassy state 玻璃态globule 小球，液滴，颗粒growing chain 生长链，活性链gyration 旋转，回旋hardness 硬度heat transfer 热传递heterogeneous 不均匀的，非均匀的hydocy acid 羧基酸hydrogen 氢（气）hydrogen bonding 氢键hydrostatic 流体静力学hydroxyl 烃基hypothetical 假定的，理想的，有前提的ideal 理想的，概念的imagine 想象，推测imbed 嵌入，埋入，包埋imperfect 不完全的improve 增进，改善impurity 杂质indispensable 不了或缺的infrared spectroscopy 红外光谱法ingredient 成分initiation （链）引发initiator 引发剂inorganic polymer 无机聚合物interaction 相互作用interchain 链间的interlink 把…相互连接起来连接intermittent 间歇式的intermolecular (作用于)分子间的intrinsic 固有的ion 离子ion exchange resin 离子交换树脂ionic 离子的ionic polymerization 离子型聚合irradiation 照射，辐射irregularity 不规则性，不均匀的isobutylene 异丁烯isocyanate 异氰酸酯isopropylate 异丙醇金属，异丙氧化金属isotactic 等规立构的isotropic 各项同性的kinetic chain length 动力学链长kinetics 动力学latent 潜在的light scattering 光散射line 衬里，贴面liquid crystal 液晶macromelecule 大分子，高分子matrix 基体，母体，基质，矩阵mean-aquare end-to-end distance 均方末端距mechanical property 力学性能，机械性能mechanism 机理medium 介质中等的，中间的minimise 最小化minimum 最小值，最小的mo(u)lding 模型mobility 流动性mobilize 运动，流动model 模型modify 改性molecular weight 分子量molecular weight distribution 分子量分布molten 熔化的monofunctional 单官能度的monomer 单体morphology 形态（学）moulding 模塑成型neutral 中性的nonelastic 非弹性的nuclear magnetic resonance 核磁共振nuclear track detector 核径迹探测器number average molecular weight 数均分子量occluded 夹杂（带）的olefinic 烯烃的optimum 最佳的，最佳值[点，状态] orient 定向，取向orientation 定向oxonium 氧鎓羊packing 堆砌parameter 参数parison 型柸pattern 花纹，图样式样peculiarity 特性pendant group 侧基performance 性能，特征permeability 渗透性pharmaceutical 药品，药物，药物的，医药的phenyl sodium 苯基钠phenyllithium 苯基锂phosgene 光气，碳酰氯photosensitizer 光敏剂plastics 塑料platelet 片晶polyamide 聚酰胺polybutene 聚丁烯polycondensation 缩（合）聚（合）polydisperse 多分散的polydispersity 多分散性polyesterification 聚酯化（作用）polyethylene 聚乙烯polyfunctional 多官能度的polymer 聚合物【体】，高聚物polymeric 聚合（物）的polypropylene 聚苯烯polystyrene 聚苯乙烯polyvinyl alcohol 聚乙烯醇polyvinylchloride 聚氯乙烯porosity 多孔性，孔隙率positive 正的，阳（性）的powdery 粉状的processing 加工，成型purity 纯度pyrolysis 热解radical 自由基radical polymerization 自由基聚合radius 半径random coil 无规线团random decomposition 无规降解reactent 反应物，试剂reactive 反应性的，活性的reactivity 反应性，活性reactivity ratio 竞聚率real 真是的release 解除，松开repeating unit 重复单元retract 收缩rubber 橡胶rubbery 橡胶态的rupture 断裂saturation 饱和scalp 筛子，筛分seal 密封secondary shaping operation 二次成型sedimentation 沉降（法）segment 链段segment 链段semicrystalline 半晶settle 沉淀，澄清shaping 成型side reaction 副作用simultaneously 同时，同步single bond 单键slastic parameter 弹性指数slurry 淤浆solar energy 太阳能solubility 溶解度solvent 溶剂spacer group 隔离基团sprinkle 喷洒squeeze 挤压srereoregularity 立构规整性【度】stability 稳定性stabilizer 稳定剂statistical 统计的step-growth polymerization 逐步聚合stereoregular 有规立构的，立构规整性的stoichiometric 当量的，化学计算量的strength 强度stretch 拉直，拉长stripping tower 脱单塔subdivide 细分区分substitution 取代，代替surfactant 表面活性剂swell 溶胀swollen 溶胀的synthesis 合成synthesize 合成synthetic 合成的tacky （表面）发粘的,粘连性tanker 油轮，槽车tensile strength 抗张强度terminate （链）终止tertiary 三元的，叔（特）的tetrahydrofuran 四氢呋喃texture 结构，组织thermoforming 热成型thermondynamically 热力学地thermoplastic 热塑性的thermoset 热固性的three-dimensionally ordered 三维有序的titanium tetrachloride 四氯化钛titanium trichloride 三氯化铁torsion 转矩transfer （链）转移，（热）传递triethyloxonium-borofluoride 三乙基硼氟酸羊trimer 三聚物（体）triphenylenthyl potassium 三苯甲基钾ultracentrifugation 超速离心（分离）ultrasonic 超声波uncross-linked 非交联的uniaxial 单轴的unsaturated 不饱和的unzippering 开链urethane 氨基甲酸酯variation 变化，改变vinyl 乙烯基（的）vinyl chloride 氯乙烯vinyl ether 乙烯基醚viscoelastic 黏弹性的viscoelastic state 黏弹态viscofluid state 黏流态viscosity 黏度viscosity average molecular weight 黏均分子量viscous 粘稠的vulcanization 硫化weight average molecular weight 重均分子量X-ray x射线x光yield 产率Young's modulus 杨氏模量课文翻译第一单元什么是高聚物？什么是高聚物？首先，他们是合成物和大分子，而且不同于低分子化合物，譬如说普通的盐。

高分子材料工程专业英语

高分子专业英语选讲课文翻译资料A 高分子化学和高分子物理UNIT 1 What are Polymer?第一单元什么是高聚物？What are polymers? For one thing, they are complex and giant molecules and are different from low molecular weight compounds like, say, common salt. To contrast the difference, the molecular weight of common salt is only 58.5, while that of a polymer can be as high as several hundred thousand, even more than thousand thousands. These big molecules or‗macro-molecules‘ are made up of much smaller molecules, can be of one or more chemical compounds. To illustrate, imagine that a set of rings has the same size and is made of the same material. When these things are interlinked, the chain formed can be considered as representing a polymer from molecules of the same compound. Alternatively, individual rings could be of different sizes and materials, and interlinked to represent a polymer from molecules of different compounds.什么是高聚物？首先，他们是合成物和大分子，而且不同于低分子化合物，譬如说普通的盐。

高分子材料工程专业英语翻译第一章第一节“什么是聚合物”

第一章聚合物的化学与物理性质第一单元什么是聚合物什么是聚合物？一方面，他们是不同于象盐一样的低分子量化合物的复杂的巨大分子。

为了区别不同之处，通常食盐的分子量是58.5，而一个聚合物可以高达几十万甚至是百万，这些大分子或高分子是由很多更小的分子组成。

形成大分子的小分子可以是一个或多个化合物。

为了说明，想象一系列有着相同的尺寸及由相同的材料组成环，当这些环相互连接起来，链则形成，这可以被认为由相同化合物分子所形成的聚合物。

另外，单独的环可以是不同的尺寸和材料，连接起来代表一个由不同分子组成的聚合物。

许多单元的连接已经给出了聚合物的名字，“poly”是多的意思。

“mer”则是部分的意思（在希腊语中）。

举个例子，一种被称为丁二烯的气体化合物，其分子量为54，在结合了4000次后，形成了众所周知的聚丁二烯（合成橡胶）聚合物，其分子量高达20万。

我们称形成聚合物的低分子量化合物为单体，图画大致如下：丁二烯+丁二烯+丁二烯+```````+丁二烯→聚丁二烯(4000个)可见对于像分子量只有54的小分子物质(单体)是如何变成分子量为20万的大分子(高聚物),聚合物分子着实的大尺寸使得他的性能和具有相似结构的化合物如苯不同.举例说明:固体苯在5.5摄氏度融化为液体的苯,再高一点的温度则变为气体苯.与这种有着明确性质的简单化合物相比,像聚乙烯这样的聚合物不会明显的在一特定温度下的完全熔化为液体.取而代之的是他变得越来越软,并且最终变成非常粘的,块状粘性流体.在这个温度上继续加热,粘性熔融聚合物转化为各种各样的气体,但不在是聚合物,. 聚合物和小分子化合物性能反应上另一个显著地不同之处关系到溶解过程.例如,让我们取些氯化钠加入到固定质量的水中.盐代表小分子量化合物.溶解在水中直至一个点（称为溶解度），但是，此后，更多量的加入则不溶解而是沉淀在底部，且作为固体留在那里。

饱和盐溶液的粘度和水没有太大区别。

但如果我们用聚合物，如聚乙烯醇，加入到一定质量的水中。

材料科学与工程专业英语课后答案

1.“Materials science"involves investigating the relationships that exist between the structures and properties of materials. In contrast, "Materials engineering" involves, on the basis of these structur e-property correlations, designing or engineering the structure of a material to produce a predeter mined set of properties.“材料科学”涉及研究材料的结构和性能之间的关系。

相反，“材料工程”是指在这些结构和性能相关性的基础上，基于预期的性能来设计或生产有预定性能的材料。

2.Virtually all important Properties of solid materials may be grouped into six different categories: mechanical, electrical, thermal, magnetic, optical, and deteriorative实际上，固体材料的所有重要性质都可以分为六类：机械、电气、热、磁、光学和腐蚀性。

3.In addition to structure and properties, two other important components are involved in the scien ce and engineering of materials- namely“processing”and“performance”.除了结构和性能之外，材料科学和工程还涉及另外两个重要的组成部分，即“加工”和“性能”。

高分子材料专业英语

高分子材料工程专业英语课后材料文章Reading-Materials

嘉兴学院高分子系吴佰程整理Reading Materials第6单元Purification of Polymers聚合物的提纯The usual purification operations used with low molecular weight compounds (for example, distillation and recrystallization) are usually not applicable to macromolecular compounds. 针对低分子量化合物通常的提纯方法，如蒸馏和重结晶通常都不能用于高分子化合物。

Distillation, 蒸馏Macromolecular compounds are not volatile and cannot simply be recrystallized from saturated solutions. One therefore has to be satisfied with extracting them in suitable solvents and thus removing the impurities.Volatile[volə’tail], 飞行的，易挥发的，快活的，爆炸性的，易激动的，反复无常的，短暂的。

Extract, v，萃取，extraction, 萃取高分子化合物不是挥发性的，而且不能简单地从饱和溶液中再结晶。

因此人们不得不用合适的溶剂来萃取这些高分子，从而去除杂质。

The purification effect of the extraction is in most cases rather slight because in many instances the impurity is held to the polymer by strong secondary valence forces. Secondary valence force, 次〔化合〕价力Hold to 坚持，紧握在大多数场合，萃取的提纯效果是很有限的，因为在许多情况下杂质被聚合物强的次价力束缚。

高分子材料与工程专业英语课文

UNIT 22 Mechanical Properties of Polymers聚合物的力学性能The mechanical properties of polymers are of interest in all applications where polymers are used as structural materials. Mechanical behavior involves the deformation of a material under the influence of applied forces.聚合物的力学性能感兴趣的所有应用中聚合物被用作结构材料。

机械行为涉及材料形变的影响下，施加的力。

The most important and most characteristic mechanical properties are called moduli. A modulus is the ratio between the applied stress and the corresponding deformation. The re-ciprocals of the moduli are called compliances. The nature of the modulus depends on the na-ture of the deformation. The three most important elementary modes of deformation and the moduli (and compliances) derived from them are given in Table 22.1, where the definitions of the elastic parameters are also given. ® Other very important, but more complicated, de-formations are bending and torsion. From the bending or flexural deformation the tensile modulus can be derived. The torsion is determined by the rigidity.最重要和最具特色的机械特性被称为模。

(完整word版)高分子材料工程专业英语翻译(word文档良心出品)

Unit 1 What are polymers?What are polymers? For one thing, they are complex and giant molecules and are different from low molecular weight compounds like, say, common salt.什么是高聚物？首先，他们是合成物和大分子，而且不同于低分子化合物，譬如说普通的盐。

To contrast the difference, the molecular weight of common salt is only 58.5, while that of a polymer can be as high as several hundred thousand, even more than thousand thousands.与低分子化合物不同的是，普通盐的分子量仅仅是58.5，而高聚物的分子量高于105，甚至大于106。

These big molecules or ‘macro-molecules’ are made up of much sma ller molecules, can be of one or more chemical compounds.这些大分子或“高分子”由许多小分子组成。

小分子相互结合形成大分子，大分子能够是一种或多种化合物。

To illustrate, imagine that a set of rings has the same size and is made of the same material. When these things are interlinked, the chain formed can be considered as representing a polymer from molecules of the same compound.举例说明，想象一组大小相同并由相同的材料制成的环。

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精品文档 . unit1 1.Not all polymers are built up from bonding together a single kind of repeating unit. At the other extreme ,protein molecules are polyamides in which n amino acide repeat units are bonded together. Although we might still call n the degree of polymerization in this case, it is less usefull,since an amino acid unit might be any one of some 20-odd molecules that are found in proteins. In this case the molecular weight itself,rather than the degree of the polymerization ,is generally used to describe the molecule. When the actual content of individual amino acids is known,it is their sequence that is of special interest to biochemists and molecular biologists.并不是所有的聚合物都是由一个重复单元链接在一起而形成的。在另一个极端的情形中，蛋白质分子是由n个氨基酸重复单元链接在一起形成的聚酰胺。尽管在这个例子中，我们也许仍然把n称为聚合度，但是没有意义，因为一个氨基酸单元也许是在蛋白质中找到的20多个分子中的任意一个。在这种情况下，一般是分子量本身而不是聚合度被用来描述这个分子。当知道了特定的氨基酸分子的实际含量，它们的序列正是生物化学家和分子生物学家特别感兴趣的地方。 1,题目：Another striking ...答案：.that quantity low saturation bottom much absorb 2. 乙烯分子带有一个双键，为一种烯烃，它可以通过连锁聚合大量地制造聚乙烯，目前，聚乙烯已经广泛应用于许多技术领域和人们的日常生活中，成为一种不可缺少的材料。 Ethylene molecule with a double bond, as a kind of olefins, it can make chain polymerization polyethylene, at present, polyethylene has been widely used in many fields of technology and People's Daily life, become a kind of indispensable materials. Unit3 1 The polymerization rate may be experimentally followed by measuring the changes in any of several properties of the system such as density,refractive index,viscosity, or light absorption. Density measurements are among the most accurate and sensitive of the techniques. The density increases by 20-25 percent on polymerization for many monomers. In actual practice the volume of the polymerizing system is measured by carrying out the reaction in a dilatometer. This is specially constructed vessel with a capillary tube which allows a highly accurate measurement of small volume changes. It is not uncommon to be able to detect a few hundredths of a percent polymerization by the dilatometer technique. 聚合速率在实验上可以通过测定体系的任一性质的变化而确定，如密度、折射率、黏度、或者吸光性能。密度的测量是这些技术中最准确最敏感的。对许多单体的聚合来说，密度增加了20%-25%。在实际操作中，聚合体系的体积是通过在膨胀计中进行反应测定的。它被专门设计构造了毛细导管，在里面可以对微小体积变化进行高精确度测量。通过膨胀计技术探测聚合过程中万分之几的变化是很常见的。 Unti4 2 合成聚合物在各个领域中起着与日俱增的重要作用，聚合物通常是由单体通过加成聚合与缩合聚合制成的。就世界上的消耗量而论，聚烯烃和乙烯基聚合物居领先地位，聚乙烯、聚丙烯等属聚烯烃，而聚氯乙烯、聚苯乙烯等则为乙烯基聚合物。聚合物可广泛地用作塑料、橡胶、纤维、涂料、粘合剂等The synthetic polymers play an increasingly important role on a range of domains, which are synthesized by monomers through addition polymerization or condensation polymerization. Polyolefin and vinyl polymer have taken the lead in terms of the world consumption. PE, PP, etc. belong to the polyolefin, while PS, PVC etc. belong to the vinyl polymer. Polymers can be widely applied in plastics, rubbers, fibers, coatings, glues and so on. Unit7 Ring-opening polymerizations proceed only by ionic mechanisms, the polymerization of cyclic ethers mainly by cationic mechanisms, and the polymerization of lactones and lactones by either a cationic or anionic mechanism. Important initiators for cyclic ethers and lactone polymerization are those derived from aluminum alkyl and zinc alkyl/water systems. It should be pointed out that substitution near the reactive group of the monomer is essential for the individual mechanism that operates effectively in specific cases; for 精品文档 . example, epoxides polymerize readily with cationic and anionic initiators, while fluorocarbon epoxides polymerize exclusively by anionic mechanisms.开环聚合反应只能通过离子机理进行，环醚（的开环）聚合主要通过阳离子机理，而内酯和内酰胺的聚合物是通过阳离子或阴离子机理。对于环醚和内酯型聚合物很重要的引发剂是那些来自于烷基铝和烷基锌/水的体系。应该指出的是（对于）在活性基团附近有取代的单体，只能由单一机理，（这一机理）是在特定条件下的有效操作，例如环氧聚合能用阳离子和阴离子引发剂，然而碳氟环氧化物的聚合只能是阴离子机理。 Chinese English Molecular Structure

聚丁二烯 polybutadiene CH2CH

CH2CH

聚苯乙烯 Polystyrene 2CHCH

三氯化钛 titanium trichloride ClClClTi

四氢呋喃 Tetrahydrofuran O2HC2CH

2HC2CH 丁基锂 butyl lithium CH3CH2CH2CH2—Li

异丁烯 isobutylene C3HC

3CH2CH

酚钠 Phenol sodium ONa

氯化钠 sodium chloride NaCl 烯丙基 Allyl CH2=CH—CH2—

光气，碳酰氯 phosgene CClCl

Unti8 1 Polymers can be classified into two main groups, addition polymers and ___condensation__ polymers. This classification is based on whether or not the repeating unit of the polymer contains the same atoms __as____ the monomer. The repeating unit of an addition polymer is identical _with/to____ the monomer, while condensation polymers contain __different/less___ because of formation of __compound/byproduct___ during the polymerization process. The corresponding polymerization processed would then be called addition polymerization and condensation polymerization. As was mentioned earlier, this classification can result ___in__ confusion, since it has been shown in later years that many important types of polymers can be _prepared by both addition and condensation processes. For example, polyesters, polyamides and polyurethanes are usually considered to be _condensation____ polymers, but they can be prepared by addition as well as by condensation reaction. Similarly, polyethylene normally considered an _addition_ polymer, can also be prepared by _condensation_ reaction. 2. Answer the following questions in English (1) What is chain polymerization? Many olefinic and vinyl unsaturated compounds are able to form chain-like macromolecules through elimination of double bond.