低品质纤维制备微纤化纤维素的研究
|
摘要
以造纸浆渣作为原材料,用高碘酸钠氧化法制备二醛基纤维素(DAC),并利用响应面法优化了DAC的制备工艺,最后对二醛基纤维素进行高压均质化处理得到了微纤化纤维素(MFC)。实验结果表明:在反应温度48℃,氧化剂用量50%,反应时间176 min的最优工艺条件下制备的DAC醛基达到947.38μmol/g。高压均质处理60 min得到的MFC平均粒径为532 nm,结晶度为27.13%,仍然保留有纤维素的基本结构,但热稳定性有所降低。在纸浆中添加5%的MFC可使纸页的抗张强度和耐破指数分别提高了81.40%和47.41%,透气度下降约50%,不透明度稍有提高。
Pulp residue was used as raw material to prepare the dialdehyde cellulose(DAC) with sodium periodate oxidation method. The response surface method was used to optimize the preparation process of DAC. Then the microfibrillated cellulose(MFC) was prepared with dialdehyde cellulose through high-pressure homogenizer. Experimental results showed that when temperature, oxidant dosage and time corresponded to 48 ℃, 50% and 176 min respectively, the aldehyde group content of DAC would reach 947.38 μmol/g. After high-pressure homogenization treatment for 60 min, the average particle size of the MFC was 532 nm and the crystallinity was 27.13%. And MFC retained the structure of the cellulose, but the thermal stability was lower. The tensile strength and bursting strength of the paper could be increased 81.40% and 47.41%, respectively, whereas its air permeability was reduced by about 50% when adding 5% MFC in it. However, the opacity of paper was slightly improved when MFC as added.
Pulp residue was used as raw material to prepare the dialdehyde cellulose(DAC) with sodium periodate oxidation method. The response surface method was used to optimize the preparation process of DAC. Then the microfibrillated cellulose(MFC) was prepared with dialdehyde cellulose through high-pressure homogenizer. Experimental results showed that when temperature, oxidant dosage and time corresponded to 48 ℃, 50% and 176 min respectively, the aldehyde group content of DAC would reach 947.38 μmol/g. After high-pressure homogenization treatment for 60 min, the average particle size of the MFC was 532 nm and the crystallinity was 27.13%. And MFC retained the structure of the cellulose, but the thermal stability was lower. The tensile strength and bursting strength of the paper could be increased 81.40% and 47.41%, respectively, whereas its air permeability was reduced by about 50% when adding 5% MFC in it. However, the opacity of paper was slightly improved when MFC as added.
引文
[1]卓治非.竹浆制备纳米纤维素晶体的研究[D].北京:中国林业科学研究院,2014.ZHUO Z F.Manufacture of nano-crvstalline cellulose from bamboo pulp[D].Beijing:Chinese Academy of Forestry,2014.
[2]黄彪,卢麒麟,唐丽荣.纳米纤维素的制备及应用研究进展[J].林业工程学报,2016,1(5):1-9.HUANG B,LU Q L,TANG L R.Research progress of nanocellulose manufacture and application[J].Journal of Forestry Engineering,2016,1(5):1-9.
[3]李伟,王锐,刘守新.纳米纤维素的制备[J].化学进展,2010,22(10):2060-2070.LI W,WANG R,LIU S X.Preparation of nanocrystalline cellulose[J].Progress in Chemistry,2010,22(10):2060-2070.
[4]MOON R J,MARTINI A,NAIRN J,et al.Cellulose nanomaterials review:Structure,properties and nanocomposites[J].Chemical Society Reviews,2011,40(7):3941-3994.
[5]GATENHOLM P,KLEMM D.Bacterial nanocellulose as a renewable material for biomedical applications[J].MRS Bulletin,2010,35(3):208-213.
[6]张俊华,宋海农,林鹿,等.化学氧化预处理对MFC性能的影响[J].中国造纸学报,2009,24(3):24-27.ZHANG J H,SONG H N,LIN L,et al.The effect of chemical oxidation pretreatment on the preparation of microfibrillated cellulose(MFC)[J].Transactions of China Pulp and Paper,2009,24(3):24-27.
[7]刘苇.纤维素纤维的高碘酸盐氧化机理及氧化纤维素纤维应用的研究[D].天津:天津科技大学,2008.LIU W.Study on the periodate oxidation mechanism of cellulose fiber and the application of oxycellulose fibers[D].Tianjin:Tianjin University of Science & Technology,2008.
[8]刘陶,许云辉,张晓丽,等.稻秸秆纤维的高碘酸钠选择性氧化[J].印染,2012,38(10):13-16.LIU T,XU Y H,ZHANG X L,et al.Selective oxidation process of rice straw fiber by sodium periodate[J].Dyeing and Finishing,2012,38(10):13-16.
[9]刘燕,冯亚青,李熙凤,等.氧化纤维素的制备研究[J].化学工程,2002,30(6):54-58.LIU Y,FENG Y Q,LI X F,et al.Studies on the preparation of dialdehyde cellulose[J].Chemical Engineering(China),2002,30(6):54-58.
[10]王海英,孟围,毕晓欣,等.桉木浆纳米纤维素响应面法优化制备及表征[J].广东化工,2012,39(7):12-14.WANG H Y,MENG W,BI X X,et al.Response surface methodology optimizing preparation and characterization of eucalyptus pulp nanocrystalline cellulose[J].Guangdong Chemical Industry,2012,39(7):12-14.
[11]赵兵,林红,陈宇岳.高碘酸钠选择性氧化纤维素研究进展[J].现代纺织技术,2013,21(5):58-61.ZHAO B,LIN H,CHEN Y Y.Research progress of cellulose selectively oxidized by sodium periodate[J].Advanced Textile Technology,2013,21(5):58-61.
[12]石淑兰,何福望.制浆造纸分析与检测[M].北京:中国轻工业出版社,2010.SHI S L,HE F W.Analysis and Detection of Pulp and Paper[M].Beijing:China Light Industry Press,2010.
[13]李萌.纳米纤维素纤维的制备及其应用的研究[D].北京:中国农业大学,2015.LI M.Study of the preparation and application of cellulose nanofibers[D].Beijing:China Agricultural University,2015.
[14]李坚.木材波谱学[M].北京:科学出版社,2003.LI J.Wood Spectroscopy[M].Beijing:China Science Publishing & Media Ltd.,2003.
[15]范慧青,王喜明,王雅梅.利用傅里叶变换红外光谱法快速测定木材纤维素含量[J].木材加工机械,2014,25(4):33-37.FAN H Q,WANG X M,WANG Y M.Rapid determination on cellulose content of wood by using FTIR spectrometry[J].Wood Processing Machinery,2014,25(4):33-37.
[16]刘羽,邵国强,许炯.竹纤维与其它天然纤维素纤维的红外光谱分析与比较[J].竹子研究汇刊,2010,29(3):42-46.LIU Y,SHAO G Q,XU J.The IR spectroscopy analysis and comparison of bamboo fiber and other natural cellulose fiber[J].Journal of Bamboo Research,2010,29(3):42-46.
[2]黄彪,卢麒麟,唐丽荣.纳米纤维素的制备及应用研究进展[J].林业工程学报,2016,1(5):1-9.HUANG B,LU Q L,TANG L R.Research progress of nanocellulose manufacture and application[J].Journal of Forestry Engineering,2016,1(5):1-9.
[3]李伟,王锐,刘守新.纳米纤维素的制备[J].化学进展,2010,22(10):2060-2070.LI W,WANG R,LIU S X.Preparation of nanocrystalline cellulose[J].Progress in Chemistry,2010,22(10):2060-2070.
[4]MOON R J,MARTINI A,NAIRN J,et al.Cellulose nanomaterials review:Structure,properties and nanocomposites[J].Chemical Society Reviews,2011,40(7):3941-3994.
[5]GATENHOLM P,KLEMM D.Bacterial nanocellulose as a renewable material for biomedical applications[J].MRS Bulletin,2010,35(3):208-213.
[6]张俊华,宋海农,林鹿,等.化学氧化预处理对MFC性能的影响[J].中国造纸学报,2009,24(3):24-27.ZHANG J H,SONG H N,LIN L,et al.The effect of chemical oxidation pretreatment on the preparation of microfibrillated cellulose(MFC)[J].Transactions of China Pulp and Paper,2009,24(3):24-27.
[7]刘苇.纤维素纤维的高碘酸盐氧化机理及氧化纤维素纤维应用的研究[D].天津:天津科技大学,2008.LIU W.Study on the periodate oxidation mechanism of cellulose fiber and the application of oxycellulose fibers[D].Tianjin:Tianjin University of Science & Technology,2008.
[8]刘陶,许云辉,张晓丽,等.稻秸秆纤维的高碘酸钠选择性氧化[J].印染,2012,38(10):13-16.LIU T,XU Y H,ZHANG X L,et al.Selective oxidation process of rice straw fiber by sodium periodate[J].Dyeing and Finishing,2012,38(10):13-16.
[9]刘燕,冯亚青,李熙凤,等.氧化纤维素的制备研究[J].化学工程,2002,30(6):54-58.LIU Y,FENG Y Q,LI X F,et al.Studies on the preparation of dialdehyde cellulose[J].Chemical Engineering(China),2002,30(6):54-58.
[10]王海英,孟围,毕晓欣,等.桉木浆纳米纤维素响应面法优化制备及表征[J].广东化工,2012,39(7):12-14.WANG H Y,MENG W,BI X X,et al.Response surface methodology optimizing preparation and characterization of eucalyptus pulp nanocrystalline cellulose[J].Guangdong Chemical Industry,2012,39(7):12-14.
[11]赵兵,林红,陈宇岳.高碘酸钠选择性氧化纤维素研究进展[J].现代纺织技术,2013,21(5):58-61.ZHAO B,LIN H,CHEN Y Y.Research progress of cellulose selectively oxidized by sodium periodate[J].Advanced Textile Technology,2013,21(5):58-61.
[12]石淑兰,何福望.制浆造纸分析与检测[M].北京:中国轻工业出版社,2010.SHI S L,HE F W.Analysis and Detection of Pulp and Paper[M].Beijing:China Light Industry Press,2010.
[13]李萌.纳米纤维素纤维的制备及其应用的研究[D].北京:中国农业大学,2015.LI M.Study of the preparation and application of cellulose nanofibers[D].Beijing:China Agricultural University,2015.
[14]李坚.木材波谱学[M].北京:科学出版社,2003.LI J.Wood Spectroscopy[M].Beijing:China Science Publishing & Media Ltd.,2003.
[15]范慧青,王喜明,王雅梅.利用傅里叶变换红外光谱法快速测定木材纤维素含量[J].木材加工机械,2014,25(4):33-37.FAN H Q,WANG X M,WANG Y M.Rapid determination on cellulose content of wood by using FTIR spectrometry[J].Wood Processing Machinery,2014,25(4):33-37.
[16]刘羽,邵国强,许炯.竹纤维与其它天然纤维素纤维的红外光谱分析与比较[J].竹子研究汇刊,2010,29(3):42-46.LIU Y,SHAO G Q,XU J.The IR spectroscopy analysis and comparison of bamboo fiber and other natural cellulose fiber[J].Journal of Bamboo Research,2010,29(3):42-46.