機械鬆弛定量分析模式建立：有機-無機混成及高交連程度系統
Date Issued
2003
Date
2003
Author(s)
DOI
912216E002014
Abstract
The influence of cross-linking on the molecular relaxation near its glass transition
temperature of the copolymer (PMMA-PBA) was studied. The degree of cross-linking of samples
was controlled by the amount of cross-linker added and was assessed by swelling ratio method.
Mechanical relaxation spectra were measured by DMA, and the results were analyzed using the
empirical HN equation. The fitting parameters obtained from the data fitting were used to
interpret the relation between molecular motions and structure of polymers based on the model
proposed by Schönhals and Schlosser. The values of α decreased with increasing cross-linker
amount, which meant intermolecular interactions were affected by cross-linking. However, the
values of αβ were not significantly changed, which meant intranmolecular interactions were not
affected by cross-linking. Besides, the relaxation time in general also rose with the increment of the level of cross-linking.
Subjects
PMMA
PBA
EGDMA
Cross-Link
Relaxation
Dynamic Mechanical Analysis
H-N Equation
Publisher
臺北市：國立臺灣大學材料科學與工程學研究所
Type
report
File(s)![Thumbnail Image]()
Loading...
Name
912216E002014.pdf
Size
161.78 KB
Format
Adobe PDF
Checksum
(MD5):e04e7c0c33dd26c01314b0e68c324efc