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macromolecle chemistry 高分子化学 PowerPoint PPT Presentation


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主讲教师:李敬芬. macromolecle chemistry 高分子化学. 教材: 《 高分子化学 》 潘祖仁主编. 2.1 缩聚反应. 逐步聚合反应 是由许多阶段性的重复反应而生成高聚物的过程,每个阶段都能得到较稳定的化合物。很多普通的缩聚物都是通过逐步聚合反应的机理聚合得到的。逐步聚合反应包括逐步缩聚反应和逐步加聚反应。. (*). 2.2 线型缩聚反应的机理. ( △ ). 2.3 线型缩聚反应动力学. 本 章 内 容. 2.4 线型 缩聚物的聚合度. ( * ). 2.5 分子量分布. 2.6 逐步聚合方法和重要的线型缩聚物.

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Macromolecle chemistry

macromolecle chemistry


Macromolecle chemistry

2.1

*

2.2

2.3

2.4

*

2.5

2.6

2.7

Chapter 2


Macromolecle chemistry

Chapter 2

(step polymerization)

PETPA (PC)(EP) (PF) (PU)


Macromolecle chemistry

Chapter 2


Macromolecle chemistry

Polycondensation) (Polyaddition)

(1)

a.

n HO-R-OH + n HOOC-R-COOH

H-(ORO-OCRCO)n-OH + (2n-1) H2O

b.

n HO-R-OH + n HO-R-OH

H-(OR-OR)n-OH +(2n-1) H2O

Chapter 2


Macromolecle chemistry

Chapter 2

c.

n H2N-R-NH2 + n ClOC-R-COCl

H-(HNRNH-OCRCO)n-Cl + (2n-1) HCl

d.

n HO-SiR1R2-OH + n HO-SiR1R2-OH

H-(OSiR1R2-OSiR1R2)n-OH +(2n-1) H2O

H2O, HCl, ROH


Macromolecle chemistry

Chapter 2

(2)

a.

n O=C=N-R-N=C=O + n HO-R-OH


Macromolecle chemistry

Chapter 2

-NH2, -NH, -OH, -SH, -SO2H, -COOH, -SiH

,

-C=C=O -N=C=O-N=C=S-CC--CN

b.Diels-Alder


Macromolecle chemistry

1

2

3

4

2.1


2 2 1

1

3

2.1

2.2.1

COOHOHCOORCOClNH2

1.


Macromolecle chemistry

1n

11 11121314

22

2.1


Macromolecle chemistry

2

2324

22 2

2.1


Macromolecle chemistry

5, 6 > 7 > 8 ~ 11 > 3, 4

2.1


Macromolecle chemistry

2.

103

K 4 K 400

103

2.1


Macromolecle chemistry

2.1

a.

n HO-R-OH H-(OR)n-OH + (n-1) H2O

b. ,

n H2N-R-NH2 + n HOOC-R-COOH

H-(HNRNH-OCRCO)n-OH + (2n-1) H2O

c.

n HO-R-COOH H-(ORCO)n-OH + (n-1) H2O


Macromolecle chemistry

:

TgTm

2.1

2 -

2-2


Macromolecle chemistry

:

2

2.2

1.


Macromolecle chemistry

2.

:

2.2

n m

(n + m)


Macromolecle chemistry

2.2

K

K K 4

KK 300500

K


Macromolecle chemistry

P

N0

tN

2.2

3.


Macromolecle chemistry

10050

N

0

X

=

n

N

2.2


Macromolecle chemistry

P0. 9Xn = 10

Xn = 100 ~ 200

P 0. 99 ~ 0. 995

300

250

200

150

X

n

100

50

0

0.0

0.2

0.4

0.6

0.8

1.0

P

2.2

4.


Macromolecle chemistry

2.2

()

300320

290310

340360

320340

350370


Macromolecle chemistry

2.2


Macromolecle chemistry

1.

2.

3.

P213 1


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