Macromolecular Architecture and Properties

9628224 Frisch该资助旨在制备新型互穿聚合物网络（IPN），包括含有非线性光学（NLO）发色团的杂化多孔无机材料（其孔含有不寻常性质的聚合物链）以及全和伪（或半）IPN。 后一种IPN材料为长寿命的二次谐波产生膜提供了很大的希望。 其他含K3C60的线性聚合物共混物是超导的，将进一步研究。 与其他一些研究小组合作，将使用同步辐射、介电和超声测量以及更常见的电子显微镜、差示扫描量热法（DSC）和机械性能测量来研究这些新材料。 这些材料的最终用途取决于它们是否经历了相变，例如IPN通常是微相分离的（特别是如果受到机械应力），或者它们是否在IPN凝胶的情况下表现出三相塌陷。 进一步的聚合物有序过渡，如微相分离的过渡，在两嵌段共聚物之间的墙壁和硬盘分子的candidal和discoidal订购将使用精确的模型进行研究。 本项目福尔斯主要研究聚合物共混物和网络的合成和性质。 除了有助于制备具有特殊用途的新型材料，如增韧膜，NLO器件，分离膜和新的催化剂载体，所提出的工作应该有助于阐明一些有趣的聚合物相变的功能。 ***

9628224 Frisch This grant aims at the preparation of novel interpenetrating polymer networks (IPN's) including hybrid porous inorganic material containing ones (whose pores contain polymer chains of unusual properties) as well as full and pseudo (or semi) IPN's functionalized with non-linear optical (NLO) chromophores. The latter IPN materials offer great promise for long lived second harmonic generating films. Other K3C60 containing blends of linear polymers are superconducting and will be further investigated. In collaboration with a number of other investigator groups, these new materials will be studied using SAXS with synchrotron radiation, dielectric and ultrasonic measurements as well as the more usual electron microscopy, differential scanning calorimetry (DSC) and mechanical property measurements. The ultimate use of these materials depends on whether they have undergone a phase transition, e.g. IPN's are often microphase separated (particularly if mechanically stressed), or whether they exhibit a triphasic collapse in the ease of IPN gels. Further polymer ordering transitions such as the microphase separation transition in diblock copolymers confined between walls and the nematic and discoidal ordering with hard disc molecules will be studied using exact models. %%% This project falls into the general area of synthesis, and properties of polymer blends and networks. Besides contributing to the preparation of novel materials with special uses such as toughened membranes, NLO devices, separation membranes, and new catalyst supports, the proposed work should help elucidate some interesting features of polymer phase transitions. ***