|本期目录/Table of Contents|

[1]王 博,杨佳欣,马红卫,等.低乙烯基聚丁二烯-b-聚乙烯基吡啶嵌段共聚物的合成与结构调控[J].合成橡胶工业,2023,4:285-289.
 WANG Bo,YANG Jia-xin,MA Hong-wei,et al.Synthesis and structural regulation of low vinyl polybutadiene-b-polyvinylpyridine block copolymers[J].China synthetic rubber industy,2023,4:285-289.
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低乙烯基聚丁二烯-b-聚乙烯基吡啶嵌段共聚物的合成与结构调控(PDF)

《合成橡胶工业》[ISSN:1000-1255/CN:62-1036/TQ]

期数:
2023年4期
页码:
285-289
栏目:
出版日期:
2023-07-15

文章信息/Info

Title:
Synthesis and structural regulation of low vinyl polybutadiene-b-polyvinylpyridine block copolymers
文章编号:
1000-1255(2023)04-0285-05
作者:
王 博杨佳欣马红卫李 杨韩 丽
大连理工大学 化工学院,辽宁 大连 116024
Author(s):
WANG Bo YANG Jia-xin MA Hong-wei LI Yang HAN Li
School of Chemical Engineering, Dalian University of Technology, Dalian 116024, China
关键词:
乙烯基吡啶丁二烯嵌段聚合物低乙烯基负离子聚合结构调控
Keywords:
vinyl pyridine butadiene block polymer low vinyl anionic polymerization structural regulation
分类号:
TQ 333.2
DOI:
DOI:10.19908/j.cnki.ISSN1000-1255.2023.04.0285
文献标识码:
A
摘要:
采用负离子聚合方法,设计合成了聚丁二烯(PB)链段长度相同、聚乙烯基吡啶(PVP)链段长度不同、分子量及其分布可控的低乙烯基PB-PVP两嵌段聚合物(lvPB-b-PVP)。通过凝胶渗透色谱和核磁共振波谱分析了聚合物的分子结构,结果显示其多分散性指数为1.09~1.21,乙烯基摩尔分数为10.4%~11.5%,低乙烯基PB的数均分子量为5.0 kg/mol,PVP的数均分子量约为5~30 kg/mol,制得嵌段共聚物的数均分子量约为10~35 kg/mol。该聚合物在自组装等方面具有一定潜在应用价值。由于聚合物中P 2 VP和P 4 VP两种试样的氢键结合能力存在明显差异,因此,lvPB-b-P 2 VP的凝胶渗透色谱分析流出时间随其分子量的增大而缩短,而lvPB-b-P 4 VP的流出时间不变且与PB前体的流出时间相同。
Abstract:
A low vinyl polybutadiene (PB)-polyvinylpyridine (PVP) diblock copolymers (lvPB-b-PVP) with the same segment length of PB but different segment length of PVP and controllable molecular weight and its distribution was designed and synthesized using anionic polymerization method. The molecular structure of the polymer was analyzed by gel permeation chromatography and nuclear magnetic resonance spectroscopy. The results showed that the polydispersity index of the molecular weight was 1.09-1.21, where the mole fraction of vinyl was 10.4%-11.5%, number-average molecular weight of low vinyl PB was 5.0 kg/mol, number-average molecular weight of PVP was about 5-30 kg/mol, and number-average molecular weight of the block copolymer was 10-35 kg/mol. This polymer was expected to has certain potential application value in self-assembly. Because the hydrogen bonding ability of P 2 VP and P 4 VP in the polymer was significantly different, the retention time of gel permeation chromatography of lvPB-b-P 2 VP shortened with the increase of its molecular weight, while the retention time of lvPB-b-P 4 VP was constant and the same as that of PB precursor.

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备注/Memo

备注/Memo:
更新日期/Last Update: 1900-01-01