共混聚合物界面相容性研究进展

综述了改善共混物界面相容性的3种方法。提高大多数不相容聚合物相容性的方法主要是加入嵌段或接枝共聚物等增容剂;对其中一相进行化学改性的方法在生物高分子领域有较多的应用;由于无机纳米粒子有增强增韧的作用且较容易获得,因此,加入无机纳米粒子改善共混聚合物相容性的方法具有很大的发展空间。     

聚合物共混物增容剂的研究

相容性聚合物共混物由于其优异的性能已成为新材料的主要研究方向。但许多共混物是互不相容的,因此必须改善它们的相容性。综述了聚合物共混物的相容性及各类增容剂的特点及应用。同时介绍了无机纳米粒子的引入对不相容聚合物共混体系相容性的影响。     

聚合物合金及相容技术

聚合物合金技术是目前开发高性能塑料最便捷有效的方法之一 ,而聚合物合金体系的相容性是影响性能的关键。本文介绍了聚合物合金的制备方法 ,讨论了聚合物合金的相容性以及不同增容方法 ,特别是增容剂技术 ,并展望了聚合物合金技术的发展前景。     

聚合物合金相容性的预测和表征

介绍混合焓变原则和溶解度参数原则等预测聚合物合金相容性的方法,以及表征聚合物合金相容性的方法,如共同溶剂法、玻璃化转变温度法、稀溶液粘度法、显微镜法、红外光谱法、超声波技术和小角中子散射法等。指出多种表征方法的综合应用可使聚合物合金相容性的评价结果更加准确可靠。     

改善聚合物共混材料界面相容性的研究进展

本文综述了聚合物共混材料界面相容性的概念、理论基础以及改善相容性的方法和增容技术的应用，简要介绍了原住复合材料的发展趋势和正弦脉动流场从物理的角度对共混物起到了增容的作用。     

聚甲醛合金的增容改性研究进展

介绍了不同增容剂增容聚甲醛(POM)/热塑性聚氨酯、POM/丁腈橡胶、POM/凝胶丁腈共聚物、POM/(乙烯/辛烯)共聚物、POM/(乙烯/丙烯/二烯)共聚物、POM/(甲基丙烯酸酯/丁二烯/苯乙烯)共聚物、POM/聚丙烯、POM/高密度聚乙烯合金体系的研究进展,并对其增容效果做了比较。     

聚合物无机纳米复合材料的研究进展

介绍了纳米粒子的特性和无机纳米粒子对聚合物改性的机理。总结了聚合物无机纳米复合材料的制备方法。     

聚合物共混相容性研究进展

介绍了聚合物共混相容性的热力学理论，讨论了相容性的实验表征方法，包括共混物形态和物性表征等，提出了改善聚合物相容性的重要途径及其进展。     

无机粒子对聚合物共混物相容性及相结构的影响

综述了无机粒子的引入对部分相容聚合物共混体系相行为和相结构演变的影响,同时介绍了无机粒子的引入对不相容聚合物共混体系热力学相容性和相结构演变(包括分散相的尺寸和形状、相转变及共连续结构的稳定性)的影响,并指出了今后研究中需要解决的一些问题。     

互穿聚合物网络讲座（连载一）

第一章概论1互穿聚合物网络的定义互穿聚合物网络的英文名是Interpene－tratingPolymerNetwork，缩写为IPN。众所周知，高聚物工作者的最基本的工作是研究高聚物的结构和性能间的关系，设计新的结构并合成之，使产品具有预期的性能，高聚物的结构是其各个结构层次的综合，所显示的性能也应是各个结构层次对性能的贡献的综合表现。表1概括了高聚物的各个结构层次所包含的内容。那么什么是IPN呢？顾名思义，粗略地说来，它是两种聚合物呈网络互锁形态的一类高次混合物结构。而IPN材料，就是具有这样结构的聚合物合金，是继机械掺混体和化…     

聚氨酯/乙烯基树脂互穿聚合物网络的研究进展

综述了聚氨酯/乙烯基树脂互穿聚合物网络（PU/VER IPNs）中两组分的聚合机理;重点讨论了分步IPNs、同步IPNs和胶乳IPNs的制备方法及其研究进展;介绍了PU/VER IPNs合成动力学的研究方法,包括化学滴定法、差示扫描量热法和傅立叶变换红外光谱法。     

Temperature transitions and compatibility in gradient interpenetrating polymer networks

Traditional and gradient IPNs of various composition have been prepared from cross-linked polyurethane and poly(butyl methacrylate). For various layers of gradient IPN cut from the surface to the centre the glass transition temperatures and composition have been determined. The sorption of benzene vapour by various layers was measured, and from these data the free energy of mixing IPN components has been calculated. For all the layer compositions free energies of mixing are positive and dependent on the distance from the sample centre. This effect is thought to be connected not only with composition but with various conditions for phase separation in various layers. Each layer consists of two phases with their own glass transition temperatures. From these data, using the Fox equation, the composition of each phase for various layers have been calculated and the volume ratio of phase evolved was estimated.     

Sorption characterization of poly(vinyl alcohol)/chitosan interpenetrating polymer network hydrogels

Poly(vinyl alcohol) (PVA)/chitosan interpenetrating polymer networks (IPN) were prepared by UV irradiation. The water sorption behavior of the IPNs was measured at various temperatures and humidity levels. The water uptake of IPN13 is greater than that of other IPNs. Vapor sorption behavior is more affected by the density of water vapor than by hydrophilic properties with increasing temperature. Equilibrium water uptake increases as humidity increases, and the increase is more noticeable at high humidity. The sorption system of all IPNs is a relaxation‐controlled mechanism at a relative humidity (RH) of 90%, but it is a Fickian diffusion‐controlled mechanism when the RH is below 50%. With an increase in humidity, the diffusion coefficients were found to increase due to greater penetration of water into the IPNs. © 2003 Wiley Periodicals, Inc. J Appl Polym Sci 90: 86–90, 2003     

复合互穿聚合物网络涂料的制备和性能研究

用环氧树脂（EP）、氨基树脂（AR）、改性醇酸树脂（AK）、二官能度低聚物（BFO）和甲苯二异氰酸酯（TDI）等为原料,制备出了EP/TDI、AR/TDI、AK/TDI、BFO/TDI等4种物质相互贯穿、相互缠绕的高抗冲击性的聚合物涂膜,研究了本聚合物（IPN）涂膜组分的不同比例在硬度升高时的抗冲击性能,并应用DSC和SEM对IPN的互穿相及断裂口进行了分析。     

聚合物共混相容性分子模拟进展

从分子模拟角度介绍如何模拟聚合物共混物相容性的方法,引入了溶解度参数和玻璃化温度。概括叙述了用分子模拟方法研究聚合物共混相容性的现状及应用,对分子模拟发展趋势作了展望。     

Electrochemical behavior of an interpenetrating polymer network hydrogel composed of poly(propylene glycol) and poly(acrylic acid)

An interpenetrating polymer network (IPN) hydrogel based on poly(propylene glycol) and poly(acrylic acid) was prepared by UV irradiation. The swelling behavior of the IPN hydrogel was studied by the immersion of the gel in aqueous NaCl solutions of various concentrations. The swelling ratio decreased with an increase in the NaCl concentration. The electrically sensitive behavior of the IPN hydrogel in electric fields was also investigated. The IPN hydrogel also showed a stepwise bending behavior that depended on the electric stimulus. The bending angle and bending speed of the IPN hydrogel were greatest in 0.6 wt % aqueous NaCl and increased with an increase in the applied voltage. © 2003 Wiley Periodicals, Inc. J Appl Polym Sci 89: 2301–2305, 2003     

Morphology and thermal and dielectric behavior of cycloaliphatic epoxy/trimethacrylate interpenetrating polymer networks for vacuum‐pressure‐impregnation electrical insulation

Vacuum pressure impregnation has been known as the most advanced impregnation technology that has ever been developed for large and medium high‐voltage electric machines and apparatuses. We developed one new type of vacuum‐pressure‐impregnation resin with excellent properties by means of a novel approach based on in situ sequential interpenetrating polymer networks resulting from the curing of trimethacrylate monomer [trimethylol‐1,1,1‐propane trimethacrylate (TMPTMA)] and cycloaliphatic epoxy resin (CER). In this study, the influence of the concentrations of the components and their microstructures on their thermal and dielectric behaviors were investigated for the cured CER/TMPTMA systems via atomic force microscopy, dynamic mechanical analysis, thermogravimetric analysis, and dielectric analysis. The investigation results show that the addition of TMPTMA to the CER–anhydride system resulted in the formation of a uniform and compact microstructure in the cured epoxy system. This led the cured CER/TMPTMA systems to show much higher moduli in comparison with the pure CER–anhydride system. The thermogravimetric analysis results show that there existed a decreasing tendency in the maximum thermal decomposition rates of the cured CER/TMPTMA systems, which implies that the thermal stability properties improved to some extent. The dielectric analysis results show that the cured CER/TMPTMA systems displayed quite different dielectric behaviors in the wide frequency range 0.01 Hz–1 MHz and in the wide temperature range 27–250°C compared with the cured CER–anhydride system. © 2008 Wiley Periodicals, Inc. J Appl Polym Sci, 2008     

Synthesis and characterization of sequential interpenetrating polymer networks of novolac resin and poly(ethyl acrylate)

Interpenetrating polymer networks (IPN) of Novolac/poly(ethyl acrylate) have been prepared via in situ sequential technique of IPN formation. Both full and semi IPNs were characterized with respect to their mechanical properties that is, ultimate tensile strength (UTS), percentage elongation at break, modulus, and toughness. Physical properties of these were evaluated in terms of hardness, specific gravity, and crosslink density. Thermal behavior was studied by differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA). The morphological features were observed by an optical microscope. There was a gradual decrease in modulus and UTS, with consequent increases in elongation at break and toughness for both types of IPNs with increasing proportions of PEA. An inward shift and lowering (with respect to pure phenolic resin) of the glass transition temperatures of the IPNs with increasing proportions of PEA were observed, thus, indicating a plasticizing influence of PEA on the rigid, brittle, and hard matrix of crosslinked phenolic resin. The TGA thermograms exhibit two‐step degradation patterns. An apparent increase in thermal stability at the initial stages, particularly, at lower temperature regions, was followed by a substantial decrease in thermal stability at the higher temperature region under study. As expected, a gradual decrease in specific gravity and hardness values was observed with increase in PEA incorporation in the IPNs. A steady decrease in crosslink densities with increase in PEA incorporation was quite evident. The surface morphology as revealed by optical microscope clearly indicates two‐phase structures in all the full and semi IPNs, irrespective of acrylic content. © 2005 Wiley Periodicals, Inc. J Appl Polym Sci, 2006     

互穿聚合物网络技术在聚氨酯中的应用

综述了互穿聚合物网络(IPN)技术在聚氨酯材料中的应用研究进展。简述了聚氨酯IPN的制备,具体叙述环氧树脂、聚丙烯酸酯、聚硅氧烷、乙烯基酯树脂等聚合物与聚氨酯互穿网络改性的效果,并在此基础上展望了聚氨酯互穿网络聚合物的发展趋势。