Synthetic pathways enables the design of functionalized poly(lactic acid) with pendant mercapto groups
作者:Daniela Pappalardo、Sofia Målberg、Anna Finne-Winstrad、Ann-Christine Albertsson
DOI:10.1002/pola.25834
日期:2012.2.15
Functionalized poly(lactic acid) having sulfur‐protected groups along the chain have been synthesized with the ultimate aim to obtain materials for reversible and degradable self‐assembly systems. The first step in the synthesis was the preparation of hydroxy‐(4‐methyl‐phenylsulfanyl)‐propionic acid and hydroxy‐(tritylsulfanyl)‐propionic acid. These sulfur‐functionalized hydroxy acids were subsequently
合成了在链上具有硫保护基团的功能化聚乳酸,其最终目的是获得可逆和可降解自组装系统的材料。合成的第一步是制备羟基-(4-甲基-苯基硫烷基)-丙酸和羟基-(三苯甲基硫烷基)-丙酸。这些硫官能化的羟基酸随后被用作共聚单体,用于乳酸的缩聚反应中,生成的乳酸官能化聚酯沿链具有硫保护基。共聚物中官能化羟基酸的比例由进料比决定。得到的聚酯是无定形的,尺寸排阻色谱分析显示出单峰分布。当用碘治疗时,S桥和分子量相应增加。©2011 Wiley Periodicals,Inc. J Polym Sci A部分:Polym Chem,2012年