您要查找的是不是：
- Copolymer is where chemical combination exists in the main chain between two polymers. 共聚是两种高聚物主链间的化学键联接。
- Recent progresses in the studies of macromolecular prodrugs are summarized on types of main chain of macromolecular. 按大分子主链分类,介绍了近年来大分子前药的研究进展。
- The aggregation phenomenon of POM in HFIP was observed and successfully explained from the main chain structure of POM. 对共聚甲醛出现的缔合现象从主链结构作了解释，并找到了避免缔合的方法；
- When 1, 2-unit content decreases and main chain becomes more flexible, the effect of solvent on 13C-NMR relaxation becomes more considerable. 1,2-链节较少,分子链较柔顺时,~(13)C-NMR弛豫受溶剂影响较显著。
- Colquhoun et al have reported the synthesis routes of PEK with macrocyclic PEEK moiety in main chain and bis(macrocyclic PEEKK)-terminated PEEK. Colquhoun等人做了一些工作，采取亲电路线合成了主链上含有环状聚芳醚酮单元的聚芳醚酮以及以环状聚芳醚酮单元封端的聚芳醚酮低聚物。
- The results show that amino acid is introduced into PLLA main chain,and the composition of the copolymer canbe adjusted according to the ratio in feed. 结果表明,氨基酸被引入到聚乳酸的主链中,且聚合物的组成可根据投料比例的不同在较大范围内调节。
- The damping property of polyurethanes is influenced by the molecular weight of soft segment in main chain and the content of graft chain. 主链软段的分子量和接枝链上软段的含量对聚氨酯的阻尼性能有较大的影响。
- So we designed the resins which polyacrylates as the main chain, biphenylyl as the side chain and the pyrrole on the end of the side chain. 因此本文设计了以聚丙烯酸酯为主链，侧链为联苯基，末端带有吡咯基的树脂。
- In this paper, the synthesis and solution properties of aromatic polymers containing 2,4-quinoline units in the main chain have been studied. 本文详细介绍了主链上含有2,4-喹啉单元的芳烃聚合物的合成方法,并对其溶解性进行了研究。
- This paper reviewed the advances in the study on the main chain type aromatic polymers including polyaryl ether ketone sulfone,calixarene,starburst and conductive polymer. 本文从聚芳醚（酮、砜）、杯芳烃和树形化合物、导电聚合物三个方面综述了主链型芳香族聚合物的研究进展。
- In this work, the graft copolymer of butyl acrylate (BA) onto EVA co- polvmer were synthesised by using benzoyl peroxide initiator (BPO), The main chain of the polymer is EVA. 以过氧化苯甲酰(BPO)为引发剂,丙烯酸丁酯(BA)与EVA的接枝共聚反应,合成了主链为 EVA,支链为聚丙烯酸丁酯(PBA)的接枝共聚物(EVA-g-BA)。
- The polycations with positively charged group in the macromolecule main chain, comb like polymers with cationic group in the side chain, and polyampholytes are described . 水溶性阳离子和两性聚电解质已成为许多工业部门的重要材料和外加剂。
- Scale inhibition property of PASP was improved by introducing carboxyl group to main chain during copolymerizing of citric acid, malay anhydride and ammonia. 将柠檬酸、马来酸酐、氨共聚,在主链上引入羧基以改性聚天冬氨酸,提高了其阻垢性能。
- These three chains are the main chains built-in by default inside basic packet-filtering tables. 这三个链是基本信息包过滤表中内置的缺省主链。
- On the basis of assignment of diad and triad sequences,characterizations of the main chain carbon-13 spectra of the polymers with different PO to EO ratios as well as possible sequence distribution are discussed. 在对其链结构进行有效归属的基础上，讨论了不同配比聚合物的核磁共振主链碳谱特点及其可能的单元链节排列顺序。
- Heparin-like compounds were prepared by introducing -COOH and -SO3H into the main chains of chitosan. 选用壳聚糖为原材料,通过改性在其主链上引入-COOH和-SO3H两种基团制备成类肝素化合物。
- When the graft ratio was high, the hydrophilic side chain was long and the molecular mass of the main chain of the hydrophilic matrix was great, the diffusion of PP-g-PEG in PP blends would be poor, and the diffusion coefficient would also be small. 接枝率越高、亲水性侧链的长度越长，亲基体主链摩尔质量越大，接枝共聚物在聚丙烯共混体系中的迁移扩散性能越差，扩散系数越小。
- Unsaturated polyphosphoester (UPPE) containing unsaturated double bonds in main chain was synthesized with fumaric acid, 1,2-propylene glycol and phosphorous oxychloride as the initiation materials. 摘要以富马酸和三氯氧磷为起始原料，合成了主链重复结构单元中含不饱和双健的聚磷酸酯。
- The main impediment to growth is a lack of capital. 影响发展的主要障碍是缺乏资本。
- The spectra confirm the formation of the intermolecular excimer of polyelectrolyte SMP, in which the chro-mogenic groups are on the main chains. 证实了生色团在主链上的聚电解质smp分子间激基缔合物的形成.
