Sponsored Links
This presentation is the property of its rightful owner.
1 / 120

第一章 高分子链的结构 PowerPoint PPT Presentation


  • 73 Views
  • Uploaded on
  • Presentation posted in: General

第一章 高分子链的结构. 桂林工学院材料与化学工程系 高分子材料与工程专业 彭锦雯. 本章提要. 教学内容 :高聚物结构的特点与层次、一级结构、二级结构、过程结构、远程结构;结构单元的化学组成、链接结构、支化与交联,共聚物结构,构型,内旋转构象、柔顺性;高分子链的构象统计:均方末端距,均方末端距 的几何计算方法和统计计算方法、均方旋转半径。 基本要求 :掌握高分子链结构的层次关系,掌握过程结构、远程结构的含义和具体内容,了解均方末端距 及几何计算方法和统计计算方法。 重点难点 :构型、内旋转构象、柔顺性、均方末端距及几何计算方法和统计计算方法。. 本章目录.

Download Presentation

第一章 高分子链的结构

An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -

Presentation Transcript




  • 1.1

    1.1.1

    1.1.2

    1.1.3

    1.1.4

  • 1.2

    1.2.1

    1.2.2

    1.2.3




1.1 or

(1).

(2).

(3). +

(4).

(5).


1.1.1

1. C

~~~~~~C-C-C-C-C-C-C-C~~~~~~~

PEPSPPPVC


2. CONS

~~~~~C-C-O-NSSi-C~~~

666PET


3. Si P B

~~~~~Si-OPAlTi)~~~~


4.


------

  • 1POM

  • 2PCPC


PEPPPS

  • PE


PE

  • PEHDPELPPE

    LDPE HPPE

    PE


  • Ultra-high molecular weight polyethylene UHMWPE

Hip and knee total joint replacements are shown as illustrations on this skeleton.


  • PP


  • PS


  • PVC


  • PMMA


  • PMMA


  • PTEFTeflon


  • PAN






  • PET


  • PA6666

  • PA66


Carothers

  • 1924

  • 19289193566,

  • 1936,6070

  • 1937429 Nobel

W. H. Carothers

(1896-1937)

DuPon


  • PC

PC

PC

PC


  • PPO

+

=

HIPS


PI



  • PIP


  • PB


  • PIB


1.1.2 Configuration

  • 1.

  • 2.

  • 3.


1.1.2.1

  • C*C

  • C

CCCC


C

  • C

CH2C HR C C


C

Isotactic

Syndiotactic

Atactic



CCC.



APP

IPP

175


  • 1

  • 2


1.1.2.2

  • 1,4


  • 8.1A

    ~30

4.7A

~70


Tm() Tg()

1,4 1,4 1,4 1,4

30 70 70 60

2 148 108 80

A30B70 AB

ACis-BTrans-

ATrans-BCis-


1.1.2.3 ------

  • ---


1,2

3,4

1,4


  • X

  • NMR

  • IR


1.1.3

  • 1.

  • 2.


1.1.3.1


1.1.3.2

  • PE

HPPELDPE HPPELDPE

Zigler

,


LDPE

0.910.94

105

6070%

HDPE

0.950.97

135

95%

  • PEPE

0.95-1.40 ------ -------



1.1.3.3


  • Mc


  • ------.

  • PEPE



  • PVCPS


1.1.4

1.

2. AB

ABBABAAABA

AAAAABBBBBAAAAAAABBB

ABABABABAB

AAAAAAAAAAAAAAA

B B

B B

B


1.1.4.1random

  • ABBABAAABA

  • 1 PEPP

    2 PTFE


1.1.4.2 block

  • AAAAABBBBBAAAAAAABBB

  • SBS

  • SBS120PSPSPBSBSPS


(thermoplastic elastomer, TPE)

  • SBSPBPSPBPSthermoplasticSBS


  • SBSBSB?

    SBSPBPS

    BSBSBSPSPB


1.1.4.3 alternating

  • ABABABABAB

  • 1. PMMAPS

    2. MMA+S

    3. S+AN


1.1.4.4 graft

  • AAAAAAAAAAAAA

    B B

    B B

    B

  • ABSacrylonitrile-butadiene-styrene


  • ABS

  • ABSCN


1.2 Conformation

  • CCCOCN

C-C


  • C-CCC-H60

T

C


0 60 120 180 240 300 360

()

  • 0120240360

  • 60180300


G

G


  • CC-CC-C10928

  • 12-


i+1

i

1.2.1

  • PEPPPS100%PB75%

  • C-CC-C

C-C

(Segment)


(Segment)

  • i+1i


------,Why?

  • ------


------



  • C



1.2.2

  • 5

  • C-C


  • 1.

    2.


1

C-CPEPP


C-OC-NSi-O

ONC Si-O-SiC-C-C SiO>CO>CC



*


p


O>S > >

>> CH2 >

>> > CCCC


2




.

.

3:


  • 4

  • 2%3%30%


5

6

PE


7

<<>PE

1

2

3


  • 8

  • PS1001,4-120


-68 -83 -108

-123 220 10

87 104 145 100


150 192 -70

-19 -50

-20 208


1

  • -83150220


2

-68 -108


3

  • -68 10 100

    192208


4

  • -2087145


1.2.3

:



.


Z i


1.2.3.1

nl


2.

nl

C-C =10928


1.2.3.2

1.


2.



3.


1.2.3.3

1b:b

2:


3:

4


AMn


1.2.3.4

  • =



  • E

    P

    E P




  • Login