本文研究了共单体邻苯二甲酸二烯丙酯（DAP）在马来酸酐（MAH）固相接枝聚丙烯（PP）过程中的作用结果。研究的结果表明，DAP的加入一方面可以提高MAH的接枝率，另一方面还可以有效地抑制PP的降解，从而解决了熔体接枝法接枝率低而普通固相接枝法产品降解较为严重的问题。这种固相共聚接枝法是合成功能化PP的一种高效方法。

九里香[Murraya paniculata（L）Jack.] 属芸香利（Rutaceao）植物，民间主要用于活血散瘀、消炎止痛、广东省阳山县和云市西双版纳产的九里香中所含的化学成分我们已有报道[1,2]。在我们研究此植物的抗凝血话性成分的过程中，从海南九里香叶和细枝中得到四种香豆精化合物（1a～d）和一种黄酮化台物，其中海南九里香内酯（la）（hainanmurpaninn）为新化合物。本文报道它们的分离和结构鉴定。

Functional monomers, maleic anhydride (MAH) and vinyl acetate (VAc), were used as comonomers in the solid-phase grafting of polypropylene (PP). Quantitative determination of the graft level of both MAH and VAc performed by titration and FTIR methods allowed for a good appreciation of the interaction of MAH and VAc. A product with high-graft level of both VAc and MAH was obtained when the feeding molar ratio of MAH/VAc approached 1:1. The melt flow rate (MFR) of the grafted PP decreased with the increase in the feeding amount of VAc. It was proposed that MAH and VAc molecules could form a kind of stable transition state during the graft polymerization and that the reactivity of both monomers were enhanced. The resulting multifunctional PP offers possibility for the development of novel PP-based polymer blends and composites, thus extending the application field of PP.

Multi-walled carbon nanotubes made by catalytic-pyrolysis of ethylene have curved bodies and exhibit entangled masses. Their average length is on the scale of microns, which is not suitable for carbon nanotubes to be used as a nanometer-scale material. Boiling carbon nanotubes in concentrated nitric acid or grinding in a ball mill can break the nanotubes. The average length of the nanotubes will be reduced and they will be relatively straight. In addition, on boiled carbon nanotubes, we find -OH,. C=O and -COOH functional groups. In this state, the nanotubes can be dispersed evenly in a matrix when used to make a composite, which can result in an enhancement of the composite's properties, especially the mechanical properties.

采用回收聚对苯二甲酸乙二酯（PET）增粘以及加入增韧剂的方法，通过一步法熔融共混挤出得到了具有良好力学性能的聚碳酸酯/回收PET（PC/RPET）合金。通过适当地增粘RPET以及合适地选择增韧剂，只需加入2.5%（质量）的增韧剂就可以得到力学性能与纯PC工程塑料相当的PC/RPET共混合金，同时成本比纯PC大幅度下降。