全部 标题 作者
关键词 摘要

OALib Journal期刊
ISSN: 2333-9721
费用:99美元

查看量下载量

相关文章

更多...

STUDY ON THE SEQUENCE STRUCTURE OF METHYL METHACRYLATE-STYRENE (M-S) COPOLYMERS BY INFRARED SPECTROSCOPY
用红外光谱研究甲基丙烯酸甲酯-苯乙烯共聚物序列结构

Full-Text   Cite this paper   Add to My Lib

Abstract:

A series of M-S low conversion copolymers were prepared by free radical polymerization and their IR spectra were measured.The 1149.5 cm-1 band which is related to a skeletal vibration coupled with CH deformation vibration in PMMA, is shifted to lower wave number with a decrease in the content of MMA in the copolymer.Two results can be drawn:(1) The correlation curve between this band position and the sequence length of M unit in the copolymer is obtained.(2) The displacement of wave number of this band is approximately propop-tional to FSMS which is defined as the mole fraction of SMS in trids of SMS.MMS.SMM.and MMM. Other environmental-sensitive bands which depend on sequence distribution were also discussed.

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133