纳米微晶纤维素-NaClO氧化淀粉的制备及其对纸张性能的影响  

Preparation of Nanocrystalline Cellulose-NaClO Oxidized Starch and Its Application in Paper Sizing

作　　者：夏媛媛 林兆云 杨桂花[1] 彭建民 陈嘉川[1] XIA Yuan-yuan;LIN Zhao-yun;YANG Gui-hua;PENG Jian-min;CHEN Jia-chuan(State Key Lab of Bio-based Materials and Green Papermaking/Key Lab of Pulp&Paper Science and Technology of Education Ministry of China,Qilu University of Technology(Shandong Academy of Sciences),Ji′nan,Shandong Province,250353)

机构地区：[1]齐鲁工业大学(山东省科学院)生物基材料与绿色造纸省部共建国家重点实验室/制浆造纸科学与技术教育部重点实验室,山东济南250353

出　　处：《中国造纸》2018年第11期12-18,共7页China Pulp & Paper

基　　金：国家重点研发项目(2017YFB0307900);国家自然科学基金(31770628);山东省重点研发计划重大科技专项(2016CYJS07A01);泰山学者工程

摘　　要：本研究在质量分数为30%的淀粉乳液中加入纳米微晶纤维素(NCC)与Na ClO于50℃恒温条件下制得NCC-NaClO氧化淀粉,并探究了NCC添加量对淀粉氧化程度的影响,再利用傅里叶变换红外光谱仪(FT-IR)、扫描电子显微镜(SEM)、X射线衍射仪(XRD)对氧化淀粉进行了表征,并探讨了氧化前后淀粉用作纸张表面施胶剂和浆内添加剂对纸张强度性能的影响。结果表明,添加NCC能有效提高淀粉的氧化效果,当NCC用量为0. 5%(以绝干淀粉质量计)时,NCC-NaClO氧化淀粉的羧基含量为1. 10%,NCC-NaClO氧化淀粉表面施胶量为2 g/m^2时,纸张表面接触角为82. 5°,可作为纸张表面施胶剂使用; NCC-NaClO氧化淀粉用量为0. 75%时,可明显改善纸张的强度性能。In this paper,oxidized starch was prepared by adding nanocrystalline cellulose(NCC)and NaClO into 30%starch emulsion at 50℃,and the influence of NCC dosage on starch oxidation process was analyzed.The oxidized starche was characterized by infrared spectroscopy(FT-IR),scanning electron microscopy(SEM)and x-ray diffraction(XRD).Then the oxidized starche was used as internal and surface sizing agents in papermaking process.The results showed that the addition of NCC could effectively improve the oxidation degree of corn starch.The carboxyl content of oxidized starch reached 1.10%with NCC dosage of 0.5 wt%.The oxidized starch could improve the paper properties when the NCC oxidized starch surface sizing amount was 2 g/m^2,the surface sized paper contact angle reached 82.5°,and the paper strength properties were improved obviously using the NCC oxidized starch as internal sizing agent with the dosage of 0.75 wt%.

关 键 词：纳米微晶纤维素 氧化淀粉 纸张性能 

分 类 号：TB383.1[一般工业技术—材料科学与工程]