竹材苄基塑料化改性的研究

以NaOH溶液作润胀剂及催化剂、氯化苄作醚化剂对竹材表面及内部进行塑化改性，并用红外光谱、扫描电镜及GC接触角分析对苄甲基化竹（塑化竹）的分子结构、微纤丝形态及表面自由能进行研究和表征。结果表明:改性竹的分子结构产生了显著变化；塑化竹表面形态发生改变，原有线性结构基本消失，表面形貌与受热皱缩的塑料极为相似；塑化竹的总表面自由能减少，表面自由能极性部分与未处理竹相比降低近一倍，其非极性部分接近PP塑料杯；塑化竹与塑料表现出较好的界面相容性；热压成型过程中塑化竹可自身黏合并呈塑料化倾向。 

Modification of benzyl-bamboo plasticization and structural analysis.

Plasticization and modification of the inner and outer part of bamboo were carried out with NaOH solution as swelling agents and catalysts, and benzyl chloride as etherification agent. The molecular structure, micro morphology and surface free energy of the benzylated bamboo were studied and characterized by Furier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM) and GC contact angle measurement. The results showed that: the molecular structure of modified bamboo varied significantly on FTIR spectrum; the surface morphology had many differences from unmodified bamboo on SEM photograph, the original linear structure disappeared, the surface morphology was more similar to the heated shrinkage plastic; total surface free energy decreased and the polarity part of free energy reduced to half as compared with that of raw bamboo, non polarity part of free energy was similar to that of PP plastic, there had excellent interfacial compatibility between benzylated bamboo and plastic. Furthermore, the benzylated bamboo presented self bonding properties and tended to thermoplasticity.