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Thermally Reversible Covalent Linking of Halide-containing Polymers

含卤化物聚合物的热可逆共价连接

基本信息

批准号：
0086491
负责人：
Eli Ruckenstein
金额：
$ 16.71万
依托单位：
SUNY at Buffalo
依托单位国家：
美国
项目类别：
Standard Grant
财政年份：
2000
资助国家：
美国
起止时间：
2000-10-15 至 2006-09-30
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=0086491&HistoricalAwards=false
关键词：
Thermally Reversible Covalent Linking Halide

项目摘要

ABSTRACTPI: Eli Ruckenstein Institution: SUNY BuffaloProposal Number: 0086491Thermally reversible covalently (TRC) linked halide containing crosslinked polymers based on ionene formation may be particularly suitable for manufacturing recyclable materials and for improving the mechanical and physical properties of traditional thermoplastic materials without loss of thermoplasticity. These crosslinked polymers can also be employed as thermal sensor materials.Two kinds of thermally reversible reactions, namely the thermally reversible Diels-Alder cycloaddition of a diene and the thermally reversible Menschutkin reaction, will be employed to generate TRC links. Salts of dicyclopentadiene dicarboxylic acid (SDCPDCA) will be used as TRC crosslinkers of halide-containing polymers. CL-containing polymers possessing benzyl chlorine, primary Cl, secondary Cl, tertialy Cl or allyl Cl moieties, will be subjected to esterification crosslinking with SDCPDCA. The latter compounds are prepared by reacting dicyclopentadience dicarboxylic acid (DCPDCA) with ethoxide or hydroxide. The crosslinked polymers will exhibit TRC crosslinking due to the thermally reversible dedimerization/dimerization of -DCPD- bridges. The above CL-containing polymers will also be crosslinked with ditertiary amines vial the formation of ionene networks based on the Menschutkin reaction. The generated ionene networks are expected to exhibit TRC crosslinking due to the dequarternization on heating and requarternization on cooling of the ionene bridges.

摘要：Eli Ruckenstein Institution：SUNY BuffaloProposal编号：0086491基于紫罗兰烯形成的含有交联聚合物的热可逆(TRC)连接的卤化物可能特别适合于制造可回收材料，以及在不损失热塑性的情况下改善传统热塑性材料的机械和物理性能。这些交联聚合物还可以用作热敏传感器材料。两种可逆的热反应，即二烯的热可逆Diels-Alder环加成反应和热可逆的Menschutkin反应，将被用来生成TRC键。双环戊二烯二元酸盐(SDCPDCA)将用作含卤化物聚合物的TRC交联剂。含有苄基氯、伯氯、仲氯、叔氯或烯丙基氯部分的含氯聚合物将与SDCPDCA进行酯化交联。后一类化合物是由双环戊二烯二元酸(DCPDCA)与乙氧化物或氢氧化物反应得到的。由于-DCPD-桥的热可逆解聚/二聚作用，交联聚合物将表现出TRC交联。上述含CL的聚合物也将通过基于Menschutkin反应形成的离子网络与二叔胺进行交联。由于离子烯桥在加热时的去季胺化和在冷却时的再季胺化，生成的离子烯网络有望呈现TRC交联。