竹原纤维与丙烯酸酯接枝物的结构与性能研究

Study on the Structure and Properties of Bamboo Fiber Grafted with Acrylate

以Ce4+引发丙烯酸甲酯(MA)、丙烯酸乙酯(EA)、丙烯酸丁酯(BA)与竹原纤维进行接枝聚合,用ATR、SEM、XRD和TG等手段表征接枝纤维的结构。接枝后纤维强度和初始模量下降,断裂伸长和柔顺性提高;耐酸、耐碱能力随接枝率的增加而提高,热稳定性提高,回潮率下降。接枝单体对纤维的改性效果顺序为BA>EA>MA。

Graft copolymerizations of methyl acrylate （MA）, ethyl acrylate （EA） and butyl acrylate （BA） onto bamboo fiber using Ce^4＋ as initiator were introduced. The structure of grafted products was characterized by means of ATR, SEM, X-ray diffraction and TG. The tensile strength and initial modulus were remarkably decreased and the breaking elongation and flexibility of grafted fiber were increased. As the grafting yield increased the acid and base resistance of grafted fiber were increased, and the thermal stability were also increased, but the moisture regain were decreased. The best effect of modification was doing with BA, and the followings were EA, MA.