| 1. | Polyvinylalcohol ; n - isopropylacrylamide ; thermo - response hydrogel ; radiation grafting ; controlled release
Pva nipaam ;温度敏感性辐射接枝控制释放 |
| 2. | Thermosensitive pva - g - nipaam copolymers was prepared by grafting copolymerization of n - isopropylacrylamide nipaam onto poly vinyl alcohol in homogeneous system by
研究了在均相体系中通过共辐射接枝法将nipaam接枝到pva上。 |
| 3. | Furthermore , as novel synthetic approach , the irradiation copolymerization was also employed to prepare new materials as functional drug carrier with controlled release
对辐射接枝共聚合制备功能药物载体研究进行了简要介绍。 |
| 4. | The membrane prepared by the radiation - induced graft copolymerization will satisfy the requirements of the proton - exchange membrane fuel cell as well as reduce the cost of the fuel cell . we can conclude that this method is successful in synthesis the proton - exchange membrane
采用辐射接枝法合成质子交换膜材料，在性能上可完全满足质子交换膜燃料电池的要求，同时又能降低膜成本，认为该法用于合成质子交换膜材料是成功的。 |
| 5. | This article reviews the principles and features of - ray irradiation graft copolymerization , and summarizes the biomedical applications of irradiation graft copolymerization to tailor surface from hydrophobicity to hydrophilicity , and their functionalization
综述了产射线辐射接枝共聚反应的原理、特点，阐述了预辐射接枝共聚和共辐射接枝共聚的方法，介绍了当前-射线辐射接枝共聚反应在改善有机生物医用材料的表面亲水性、生物相容性等方面的应用。 |
| 6. | The content of styrene was found to be dependent on the investigated grafting conditions , of which the dose rate and monomer concentration were the major conditions , and the dependence of the initial rate of grafting on the dose rate and the monomer concentration was found to be of 0 . 4286 and 1 . 1662 orders , respectively . the results indicate that the grafting reaction is competitive and the copolymerization and the graft - copolymerization are existing at the same time . the grafting proceeds by the so - called front mechanism in which the grafting starts at the surface of the films and moves toward the middle of the film by successive diffusion of the styrene through the grafted layers
我们对辐射接枝反应中的各个因素如：单体浓度、辐射剂量率、辐射剂量以及反应时间进行了研究分析，结果表明：单体浓度和剂量率是反应的两个主要影响因素，它们对反应速率的影响指数分别为1 . 1662和0 . 4269 ；反应的动力学方程为： rg k [ d ] ~ ( 0 . 4269 ) [ m ] ~ ( 1 . 1662 ) ；认为接枝反应是一竞争反应，单体的均聚反应和在聚合物上的接枝反应同时存在，单体浓度的高低决定着竞争反应的方向；辐射接枝反应是从聚合物表面开始的，随着溶剂的溶胀和单体的扩散最后在整个膜体中形成接枝产物。 |
| 7. | Emphasis is laid on the new methods of post - functionallization in terms of plasma graft copolymerization , supercritical carbon dioxide graft copolymerization and solid state mechanical chemical graft copolymerization , and some renovations to the traditional post - functionallization in terms of solvent graft copolymerization , radiation graft copolymerization and solid phase graft copolymerization
本文重点介绍近年来后功能化的新技术如等离子体接枝、超临界二氧化碳接枝、固相力化学接枝和缩合聚合接枝以及传统方法比如溶液接枝法、辐射接枝法和固相接枝法的更新与改进。 |
| 8. | According to the observed experiments that the na2feo4 solution with the same concentration and volume were decomposed by the same area of different membrane , we learned the order of the decomposing rate of na2feo4 caused by different membranes : soapnated cellulose acetate > vinylon > polypropylene polyvinyl chloride = polyethylene microfiber glass mat
从观察等面积的隔膜引起同浓度同体积的na _ 2feo _ 4溶液的分解实验可知，不同隔膜材料引起na _ 2feo _ 4溶液分解速率从大到小的顺序是，皂化再生纤维素膜维尼纶无纺布改性聚丙烯膜聚氯乙烯膜辐射接枝聚乙烯膜复合玻璃纤维毡。 |
| 9. | When they were respectively used as separator in zn / k2feo4 battery , the percent of capacity of the cathode active material na2feo4 were : microfiber glass mat ' s : 93 % ; polyethylene ' s : 68 % ; polypropylene ' s : 56 % ; polyvinyl chloride ' s : 47 % ; vinylon ' s : 38 % ; soapnated cellulose acetate ' s : 24 % . although five of them ( not concluding soapnated cellulose acetate ) had very weak or weaker reductivity as separator in super - iron battery , for which th ey were more suitable to being separator in super - iron battery
作为隔膜用于zn k _ 2feo _ 4实验电池，正极活性物质k _ 2feo _ 4的放电容量效率分别为复合玻璃纤维膜93 、辐射接枝聚乙烯膜68 、改性聚丙烯微孔膜56 、聚氯乙烯微孔膜47 、维尼纶无纺布38 、皂化再生纤维素膜24 。 |
