摘要
探讨了碱性环境中OCC纸浆纤维素与己内酰胺在过硫酸钾-亚硫酸氢钠引发体系中进行接枝共聚反应的主要工艺参数。研究结果表明:当单体与浆的质量比为0.5,引发剂过硫酸钾的用量为8.0%(对绝干纸浆),过硫酸钾和亚硫酸氢钠的质量比为5∶4,反应时间为2.5h,反应温度为60℃时,单体接枝率可达到25.6%,接枝后纤维成纸物理强度性能提高,抗水性增强。用傅立叶红外光谱(FTIR)、X-射线衍射对接枝产物的化学结构进行了表征,结果表明,接枝反应主要发生在纤维的表面和无定形区,对其结晶性没有损害。
The main process parameters of grafting copolymerization modification of OCC pulp cellulose with hexanelactam were discussed by using potassium persulphate-sodium bisulfite as initiator under alkaline medium.The results show that the maximum grafting ratio can be up to 25.6%,and the mechanical strength and water resistant property of the handsheet can be raised when the quality ratio of monomer to pulp is 0.5,the ratio of initiator dosage to fiber is 8.0%,the ratio of potassium persulphate to sodium bisulfite is 5：4,the reaction time is 2.5h and the reaction temperature is 60℃.The structures and properties of the grafted products were also characterized by means of Fourier transform infrared spectroscopy （FTIR） and X-ray diffraction.It was found that the grafting copolymerization mainly occurs on the surface and within the amorphous region of the fiber;the crystallinity can not be destroyed.
出处
《中华纸业》
CAS
北大核心
2010年第10期52-56,共5页
China Pulp & Paper Industry
关键词
己内酰胺
接枝共聚
改性
表征
hexanelactam
grafting copolymerization
modification
characterization
