Acknowledgement
Supported by : 동국대학교
For the purpose of improving the wet strength properties of paper, cellulosic fibers were modified by the processes of carbarmoylethylation and N-chlorocarbamoylethylation. Carbamoylethylated cellulose was prepared by the reaction of acrylamide with cellulosic fibers under the alkali catalyst, and N-chlorocarbamoylethylated cellulose was prepared by the addition of sodium hypochlorite into the carbamoylethylated cellulose. In carbamoylethylation reaction, the conditions of NaOH concentration, temperature and acrylamide addition rate were considered to be important factors. An initial reactivity and degree of substitution(DS) in carbamoylethylation of cellulosic fibers were effective according to increasing the addition rates of alkali, acrylamide and the temperature condition of
종이에 습윤강도를 부여하기 위하여 셀룰로오스 섬유를 chlorocarbamoylethyl화 한 후 이를 다시 N-chlorocarbamoylethyl화했다. Chlorocarbamoylethyl화는 알칼리 촉매하에서 아크릴 아마이드와의 반응에 의해서 제조되었으며, N-chlorocarbamoylelhyl 화는 차아염소산나트륨 첨가에 의해서 제조되었다. carbamoylelhyl 화에서는 NaOH의 농도와 온도 그리고 아크릴아마이드의 첨가량이 중요한 인자로 작용했으며, carbamoylelhyl화의 초기반응에서는
Supported by : 동국대학교