DCPD和PET合成不饱和聚酯的研究

探讨了用双环戊二烯和聚对苯二甲酸乙二醇酯废料合成不饱和聚酯树脂的方法：PET用二元醇醇解后，加入顺入烯二酸酐和DCPD，在80－120℃条件下滴加与DCPD等量的水进行反应，反应大约2.5h，加入其它成分，升温酯化直至反应完全。PET一定时，DCPD的含量影响不饱和聚酯同苯乙烯的互溶性和固化过程，DCPD和PET合成的不饱和聚酯树脂与标准树脂相比较，机械性能好，空干性好，解决了环境污染，具有很好的经济效益。     

具有除草活性的双膦酸衍生物的研究动态

许多含双膦酸结构单元的化合物都显示了良好的除草活性,本文对这类化合物的结构特点、生物活性以及相关的研究动态进行了归纳和概述。     

建筑微晶玻璃板

目前市场上流行的建筑微晶玻璃均为打磨抛光的仿花岗石和仿大理石的板材。近来，国外研制成功一种不需打磨抛光而闪烁丝绸光泽的建筑微晶玻璃板。     

Preparation of Laminin-apatite-polymer Composites Using Metastable Calcium Phosphate Solutions

A synthetic polymer with a laminin-apatite composite layer on its surface would be useful as a percutaneous device. The preparation of such a composite was attempted in the present study using poly（ ethylene terephthalate ） （PET） and polyethylene （PE） as the synthetic polymer. PET and PE plates and those pretreated with an oxygen plasma were alternately dipped in calcium and phosphate ion solutions, and then immersed in a metastable calcium phosphate solution supplemented with laminin （ LCP solution ）. The PET and PE plates pretreated with an oxygen plasma formed a uniform and continuous layer of a laminin-apatite composite on their surfaces. In contrast, the PET and PE plates that had not been pretreated with an oxygen plasma did not form a continuous layer of a laminin-apatite composite on their surfaces. The hydrophilic functional groups on the PET and PE surfaces introduced by the plasma treatment were responsible for the successful laminin-apatite coruposite coating.