Polymer Physics
高分子物理
徐君庭，沈烈
achers
• 徐君庭
任课教师
– 高分子大楼419; 87953164 –
• 沈烈
– 高分子大楼310; 87953712 –
Books and references
教材与参考书
• 方征平，宋义虎，沈烈 高分子物理 (Polymer Physics) 浙江大学出版社, 杭州, 2019 • 何曼君，陈维孝，董西侠 高分子物理(修订版) 复旦大学出版社，上海，1990 • 金日光，华幼卿 高分子物理(第二版) 化学工业出版社，北京，2000 • L. H. Sperling Introduction to Physical Polymer Science • P. J. Flory Pricinples of Polymer Chemistry
• 网络课件地址： /polymerphysics/
或
:8080/ka/index.htm 省级精品课程(2009年)
电子教案
概念图解(完善中，欢迎同学参加！) 教学课件 名词解释 教学大纲 实验内容 实验仪器
实验教学
特色教学
教学研究 学生作业
short branching polymer 3rd generation
comblike polymer star polymer 2nd generation
1st generation dendrimer
core
hyperbranch polymer
Thermal Behavior
Thermosets Rigid materials and network polymers in which chain motion is greatly restricted by a high degree of crosslinking. Intractable once formed. Degrade rather than melt upon heating. Thermoplastics (plastics) Linear or branched polymers which can be melted upon the application of heat. (Largest proportion of the polymers used in industry.)
学习资料
习题
Introduction
绪 论
Definitions of Polymers
高分子的定义
• Polymers are long-chain molecules of very high molecular weight, often measured in the hundreds of thousands • 高分子是由成千上万个结构单元以共价键重复 连接而成的长链分子
• (poly=many; mer=unit)
Nomenclature
高分子术语
• Polymer 聚合物 • Macromolecule 大分子 • High Polymer 高聚物 • Monomer
单体
• Molecule
小分子
• Oligomer
齐(低)聚物
Classification of synthetic polymers
• Classification according to: – Physical structure – Thermal behaviour – Use – Preparation method
Physical Structure
Linear polymers may be represented by a chain with two ends. Branched polymers have side chains, or branches, of significant length which are bonded to the main chain at branch points, and are characterized in terms of the number and size of the branches. Polymers with well-controlled modes of branching: comblike polymers, star polymers, dendrimers, etc. Network polymers have three-dimensional structures in which each chain is connected to all others, and are characterized by their crosslinking density or degree of crosslinking (number of junction points per unit volume).
Herman Staudinger
1953 Nobel prize awarder Macromolecular Hypothesis (1920) The origin of modern polymer science
• Polymer, or Macromolecule • large molecule consisting of repeating smaller units (called monomer). • e.g.
Crystalline polymers Invariably do not form perfect crystalline materials but instead are semicrystalline with both crystalline and amorphous regions. The crystalline phase of such polymers are characterized by their melting temperature (Tm). Amorphous polymers Characterized by their glass transition temperature (Tg), the temperature at which they transform abruptly from the glass state (hard) to the rubbery state (soft). This transition corresponds to the onset of motion of chain segments.