完整版课件ppt
14
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).
Thermoplastics (plastics)
Linear or branched polymers which can be melted
upon the application of heat. (Largest proportion of
the polymers used in industry.)
Polymer Physics
高分子物理
徐君庭，沈烈
Teachers 任课教师
• 徐君庭
– 高分子大楼419; 87953164 – xujt@
• 沈烈
– 高分子大楼310; 87953712 – shenlie@
完整版课件ppt
2
Books and references
完整版课件ppt
10
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.
• P. J. Flory Pricinples of Polymer Chemistry
完整版课件ppt
3
• 网络课件地址：
/polymerphysics/
或 :8080/ka/index.htm 省级精品课程(2009年)
7
• Polymer, or Macromolecule • large molecule consisting of repeating
smaller units (called monomer).
• e.g.
• (poly=many; mer=unit)
完整版课件ppt
8
Nomenclature
13
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.
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
完整版课件ppt
9
ቤተ መጻሕፍቲ ባይዱ
Classification of synthetic polymers
• Classification according to: – Physical structure – Thermal behaviour – Use – Preparation method
完整版课件ppt
4
电子教案 实验教学
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
特色教学
教学研究 学生作业
学习资料 习题
完整版课件ppt
5
Introduction
绪论
完整版课件ppt
6
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
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).
完整版课件ppt
11
完整版课件ppt
12
short branching polymer 3rd generation
comblike polymer 2nd generation
star polymer
1st generation dendrimer
core
完整版课件ppt
hyperbranch polymer
• 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
Herman Staudinger
Macromolecular Hypothesis (1920)
1953 Nobel prize awarder
The origin of modern polymer science
完整版课件ppt
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, 2008
• 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