U.S.-France Cooperative Research: Nitroxide Assisted Living Free-Radical Polymerization of Block Copolymers in Supercritical Carbon Dioxide (CO2) and Characterization by Light Scat

0089956德西蒙美国三年奖法国合作研究涉及约瑟夫M。北卡罗来纳州NSF环保溶剂和工艺科学技术中心的DeSimone和法国蒙彼利埃国立化学学院的帕特里克·拉克鲁瓦-德马泽斯。 该项目涉及使用氮氧化物合成新型氟化嵌段共聚物，其在超临界二氧化碳溶液中的表征以及随后在苯乙烯，甲基丙烯酸酯，丙烯酸酯和共聚物的分散聚合中的应用。这位美国研究人员为此次合作带来了使用超临界二氧化碳作为聚合溶剂的专业知识。 他的团队将表征氟化共聚物的溶液性质;并进行静态光散射研究。 法国在共聚物合成方面的专业知识对此进行了补充。 法国实验室将通过一种基于氮氧化物的活性自由基聚合工艺制造共聚物。氟化嵌段共聚物是一类工业上重要的聚合物，通常不溶于传统的有机和卤化溶剂。 这项合作计划将促进对氟化嵌段共聚物特性的理解，并将超临界二氧化碳作为一种环境友好的生产方法。该奖项代表了美国国家科学基金会和法国国家科学研究中心（CNRS）的联合提案。 美国国家科学基金会将支付美国研究小组成员的访问费用。CNRS将支持法国研究人员访问美国。

0089956DeSimoneThis three-year award for U.S.-France cooperative research involves Joseph M. DeSimone of the NSF Science and Technology Center for Environmentally Responsible Solvents and Processes at the University of North Carolina and Patrick Lacroix-Desmazes of the Ecole Nationale Superieure de Chimie, Montpellier, France. The project addresses the synthesis of novel fluorinated block copolymers using nitroxides, their characterization in supercritical carbon dioxide solution and subsequent use in the dispersion polymerization of styrene, methacryaltes, acrylates and copolymers. The US investigator brings to this collaboration expertise in using supercritical carbon dioxide as a polymerization solvent. His group will characterize the solution properties of the fluorinated co-polymers; and perform static light scattering studies. This is complemented by French expertise in the synthesis of copolymers. The French laboratory will make the copolymers by a living free-radical polymerization process based on the use of nitroxides. Fluorinated block copolymers, a class of industrially important polymers, are typically insoluble in traditional organic and halogenated solvents. The proposed collaboration will advance understanding of characterization of fluorinated block copolymers and the use of super critical carbon dioxide as an environmentally benign method for producing them.This award represents the US side of a joint proposal to the NSF and the French National Center for Scientific Research (CNRS). NSF will cover the expenses of visits of members of the US research group. The CNRS will support the visits of French researchers to the United States.