不饱和单体熔融接枝PP体系中引发剂的选择

本文选择了过氧化异丙苯、过氧化苯甲酰、二叔丁基过氧化物三种引发剂进行实验。比较了三种引发剂的基本性能。讨论了引发剂种类及用量对接枝反应的影响，并研究了三种引发剂对ＰＰ降解及对接枝物外观颜色的影响。     

Electroless plating of copper on polyimide films modified by surface grafting of tertiary and quaternary amines polymers

Argon plasma-pretreated polyimide (PI, Kapton^® HN) films were subjected to UV-induced surface graft copolymerization with N,N′-(dimethylamino)ethyl methacrylate (DMAEMA) and 2-(trimethylammonium)ethyl methacrylate chloride (TMMAC). The DMAEMA graft-copolymerized PI (DMAEMA-g-PI) surfaces were also quaternized and amino-functionalized with 3-bromopropylamine hydrobromide (the Q-DMAEMA-g-PI surfaces). The surface composition and the degree of quaternization of the graft-modified PI films were determined by X-ray photoelectron spectroscopy. The DMAEMA-g-PI, Q-DMAEMA-g-PI and TMMAC graft-copolymerized PI (TMMAC-g-PI) surfaces can be activated directly by PdCl₂, in the absence of prior sensitization by SnCl₂ (the ‘Sn-free’ activation process), for the subsequent electroless plating of copper. A shorter induction time for the electroless deposition of copper was found for the palladium-activated Q-DMAEMA-g-PI and TMMAC-g-PI surfaces than for the palladium-activated DMAEMA-g-PI surface. The T-peel adhesion strength of the electrolessly deposited copper with the Q-DMAEMA-g-PI surface was enhanced to above 6 N/cm, in comparison to only about 4 N/cm for the DMAEMA-g-PI surface, about 2.5 N/cm for the TMMAC-g-PI surface, or about 0.5 N/cm for the PI surface with argon plasma treatment alone.     

HDPE／PA6共混型塑料阻隔材料

以自制接枝聚乙烯为增容剂，高密度聚乙烯为基材，尼龙６为阻隔材料，用挤出法，制取ＨＤＰＥ／ＰＡ６共混材料。ＭＰＥ的加入，增大了相间的粘接改善了力学性能，使材料具有良好的阻渗性能。     

CR／MMA乳液接枝共聚物的研制

用乳液接枝共聚法制备ＣＲ／ＭＭＡ共聚物，讨论ＣＲ乳液、引发剂、接枝温度、ＭＭＡ用量对接枝共聚转化率，接枝ＭＭＡ含量、ＭＭＡ接枝效率和粘接性能的影响，用红外光谱对接枝共聚物进行表征，该共聚物具有较好的粘接性能。     

γ－巯基两基三甲氧基硅烷对SBR的接枝改性研究

本文研究了γ－流基丙基三甲氧基硅烷（ＫＨ５９０）对白炭黑填充的ＳＢＲ胶料的光接枝反应。通过接枝反应，提高了橡胶填料间界面粘合性，也提高了硫化胶的３００％定伸模量，改善了撕裂强度、压缩永久变形及耐磨耗性等、此外，在ＮＢＲ中也取得同样改性效果。尤其是，改善了耐碱性。但经照射后在室内放置会增加凝胶化，影响到加工性能．     

大单体参与的分散聚合

~~大单体参与的分散聚合@陈永春$湖北大学化学与材料科学学院!武汉,430062 @易昌凤$湖北大学化学与材料科学学院!武汉,430062 @曹红燕$湖北大学化学与材料科学学院!武汉,430062 @冯伟程$湖北大学化学与材料科学学院!武汉,430062 @时远$湖北大学化学与材料科学学院!武汉,430062~~~~~~     

聚丙烯接枝改性及其接枝物的应用

对聚丙烯接枝的几种方法、单体和引发剂的选择及接枝物的表征作了简要的介绍；并介绍聚丙烯接枝物的应用情况。     

Copolymerization of norbornene with norbornene terminated polystyrene macromonomer in the presence of Ni-based/MAO catalytic systems

Copolymerization of -norbornenyl polystyrene macromonomer (NBE-PS) with norbornene (NBE) using Ni-based catalysts in combination with methylaluminoxane (MAO) was investigated. The nature of the catalyst, the of the polystyrene macromonomer as well as the [NBE-PS]/[NBE] ratio have been shown to be important parameters to obtain graft copolymers with high NBE-PS incorporation (up to 43 wt%). The compatibilization ability of these graft copolymers has been checked for PS/PNBE blends. The length of the grafts was proved not to be an important parameter to consider compatibilization of the PS/PNBE blend.     

氯化聚乙烯接枝马来酸酐胶粘剂的研究

本文介绍了改性聚丙烯（PP）基泡沫材料用的水溶性胶粘剂的研制。该胶粘剂不影响泡沫材料的阻燃性能和吸声性能，并有较好的热稳定性和储存性以及优化的耐水性。     

Surface-initiated atom transfer radical polymerization of methyl methacrylate on magnetite nanoparticles

The synthesis of magnetite nanoparticles coated with a well-defined graft polymer is reported. The magnetite nanoparticles with an initiator group for copper-mediated atom transfer radical polymerization (ATRP), 2-(4-chlorosulfonylphenyl) ethyltrichlorosilane (CTCS) chemically bound on their surfaces were prepared by the self-assembled monolayer-deposition method. The surface-initiated ATRP of methyl methacrylate (MMA) was carried out with the CTCS-coated magnetite nanoparticles in the presence of free (sacrificing) initiator, p-toluenesulfonyl chloride. Polymerization proceeded in a living fashion, exhibiting first-order kinetics of monomer consumption and a proportional relationship between molecular weight of the graft polymer and monomer conversion, thus providing well-defined, low-polydispersity graft polymers with an approximate graft density of 0.7 chains/nm². The molecular weight and polydispersity of the graft polymer were nearly equal to those of the free polymer produced in the solution, meaning that the free polymer is a good measure of the characteristics of the graft polymer. The graft polymer possessed exceptionally high stability and remarkably improved dispersibility of the magnetite nanoparticles in organic solvent.