1,1'-二甲基二甲基二二二醇基的共聚化,用于制备可降解的乙烯基聚合物
Oleksandr Ivanchenko1, Mathias Destarac1
1Laboratoire SOFTMAT, Université de Toulouse, CNRS UMR 5623, Université Toulouse III-Paul Sabatier, Toulouse 31062, France.
ACS macro letters
|December 20, 2023
概括
1,1'-硫基胺醇 (TCDI) 能够与常见单体进行受控的激素共聚合. 这种方法产生可降解的乙烯基共聚合物,具有调节性质,并有可能将链延伸到块共聚合物.
科学领域:
- 聚合物化学 聚合物化学
- 极端聚合方式 极端聚合方式
- 材料科学 材料科学 材料科学
背景情况:
- 1,1′-硫基胺醇 (TCDI) 是一种多用途的试剂.
- 控制的激素聚合技术对于设计先进的聚合物架构至关重要.
- 开发可降解的聚合物对于可持续材料至关重要.
研究的目的:
- 为了研究TCDI与各种乙烯基单体的激进共聚合.
- 描述由此产生的共聚合物,重点关注可降解性和链延伸性.
- 建立TCDI作为可行的单体,用于受控聚合.
主要方法:
- 激进共聚化TCDI与三甲基烯酸 (tBA),N,N-二甲基烯胺和烯.
- 1HNMR光谱用于监测共纳体反应性和结构分析.
- 可逆添加碎片化链转移 (RAFT) 聚合,用于控制分子量和分散度.
- 链延长实验以形成双块共聚合物.
- 使用各种化学剂 (异胺,氧化,氧化,漂白剂) 的降解研究.
主要成果:
- 在10%的料比率下,TCDI与tBA,N,N-二甲基胺和烯具有良好的兼容性和相似的消耗率.
- TCDI与tBA的RAFT共聚化产生具有线性摩尔质量增加和低分散度 (1.2-1.4) 的聚合物.
- 成功地将P ((TCDI-co-tBA) 与 styrene 的链延长,以形成双块共聚合物.
- 在共聚合物骨干中通过1HNMR确认TCDI衍生型二米达基乙烯分片.
- 降解实验证实了可降解TCDI部分的存在.
结论:
- 通过激进聚合,TCDI可以有效地纳入乙烯基共聚合物.
- 开发的方法允许对具有可调节分子量的可降解共聚合物的受控合成.
- 含有TCDI的共聚合物可以用作区块共聚合物合成的宏观启动剂.
- 这项工作扩大了TCDI在设计功能性和可降解的聚合物材料中的实用性.
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