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首页> 外文会议>Takasaki Symposium on Radiation Processing of Natural Polymers November 23 and 24, 2000, JAERI, Takasaki, Japan >Radiation Processing of Biodegradable Polymer Hydrogel from Cellulose Derivatives
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Radiation Processing of Biodegradable Polymer Hydrogel from Cellulose Derivatives

机译：纤维素衍生物可降解聚合物水凝胶的辐射加工

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摘要

The effects of high-energy radiation on ethers of cellulose: carboxymethyl-, hydroxypropyl- and hydroxyethylcellulose have been investigated. Polymers were irradiated in solid state and aqueous solution at various concentrations. Degree of substitution (DS), the concentration in the solution and irradiation conditions had a significant impact on the obtained products. Irradiation of polymers in soild and in diluted solution resulted in their degradation. A novel hydrogels of such natural polymers were synthesized, without using any additives, by irradiation at high concentration. It was found that high DS of CMC promoted crosslinking and, for all of the ethers, the gel formation occurred easier for more concentrated solutions. Paste-like form of the initial material, when water plasticized the bulk of polymer mass, along with the high dose rate and proveneting oxygen accessibility to the sample during irradiation were favorable for hydrogel preparation.
机译：研究了高能辐射对纤维素醚的影响：羧甲基纤维素，羟丙基纤维素和羟乙基纤维素。固态和水溶液以各种浓度辐照聚合物。取代度（DS），溶液中的浓度和辐照条件对所得产物有重大影响。在脏污的和稀释的溶液中照射聚合物会导致其降解。通过使用高浓度的辐射，在不使用任何添加剂的情况下合成了这种天然聚合物的新型水凝胶。发现CMC的高DS促进交联，并且对于所有醚，更浓缩的溶液更容易发生凝胶形成。当水将大量的聚合物块塑化时，其呈糊状形式的初始材料，以及高剂量率和辐照过程中样品对氧的渗透性均有利于水凝胶的制备。

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