纳米纤维素/羟丙基甲基纤维素复合膜的制备与性能研究
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摘要
为开发纤维素基可降解膜材料,以酸解微晶纤维素的方式制备了纳米纤维素(NCC),并以其为增强相,羟丙基甲基纤维素(HPMC)为成膜基质,甘油为增塑剂,通过流延法制备了复合膜。考察了NCC质量分数对复合膜性能的影响,所得NCC的产率为37. 42%,结晶度较微晶纤维素(MCC)有所提高。复合膜的形貌、结晶结构、化学键分析结果显示,NCC在基质中均匀分散,NCC与HPMC之间存在着较强的相互作用。性能测试结果表明,当NCC质量分数为8%时,复合膜的抗拉强度提高了50. 61%,水蒸气透过率下降了15. 27%,阻氧性能提高了36. 04%;因此,NCC可有效提高HPMC膜的力学性能和阻隔性能,且对其透光率也有所改善。
For the development of cellulose based biodegradable film material,nanocellulose( NCC) is prepared by acid hydrolysis of microcrystalline cellulose. A composite membrane is prepared by casting process with NCC as a reinforcing phase,hydroxypropyl methyl cellulose( HPMC) as film-forming material and glycerol as plasticizer.The effect of NCC content on the properties of the composite membrane is investigated. The yield of NCC is 37. 42% and the crystallinity of NCC is higher than that of microcrystalline cellulose. Analysis on the morphology,crystal structure and chemical bond of the composite membrane shows that NCC disperses uniformly in the matrix,and there exists a strong interaction between NCC and HPMC.The performance tests indicate that the tensile strength of the composite membrane can increase by 50. 61%,the water vapor permeability will decrease by 15. 27% and oxygen resistance can increase by36. 04% when NCC content is 8%. Therefore,NCC can improve effectively the mechanical properties and barrier properties of HPMC membrane,and can also improve certainly its transmission rate.
For the development of cellulose based biodegradable film material,nanocellulose( NCC) is prepared by acid hydrolysis of microcrystalline cellulose. A composite membrane is prepared by casting process with NCC as a reinforcing phase,hydroxypropyl methyl cellulose( HPMC) as film-forming material and glycerol as plasticizer.The effect of NCC content on the properties of the composite membrane is investigated. The yield of NCC is 37. 42% and the crystallinity of NCC is higher than that of microcrystalline cellulose. Analysis on the morphology,crystal structure and chemical bond of the composite membrane shows that NCC disperses uniformly in the matrix,and there exists a strong interaction between NCC and HPMC.The performance tests indicate that the tensile strength of the composite membrane can increase by 50. 61%,the water vapor permeability will decrease by 15. 27% and oxygen resistance can increase by36. 04% when NCC content is 8%. Therefore,NCC can improve effectively the mechanical properties and barrier properties of HPMC membrane,and can also improve certainly its transmission rate.
引文
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[2]Cristina Bilbao-Sainz,Robert Ojavena-Bustillos,Delilah F Wood,et al.Composite edible films based on hydroxypropyl methylcellulose reinforced with microcrystalline cellulose nanoparticles[J]. Journal of Agricultural and Food Chemistry,2010,58(6):3753-3760.
[3]吴俊红,王家俊,厉依俏,等.壳聚糖/羟丙基甲基纤维素包装薄膜的结构与性能[J].浙江理工大学学报,2010,(1):64-68.
[4]Snchez-Gonzlez L,Gonzlez-Martínez C,Chiralt A,et al.Physical and antimicro-bial properties of chitosan-tea tree essentialoil composite films[J]. Journal of Food Engineering,2010,9(8):443-452.
[5]张艳平,王家俊,余丽萍,等.天然抗氧化羟丙基甲基纤维素水溶性包装薄膜[J].包装学报,2017,9(3):50-57.
[6]汪开拓,廖云霞,阚建全,等.核黄素复合羟丙基甲基纤维素涂膜处理对采后杨梅果实冷藏品质及抗氧化活性的影响[J].2015,36(6):331-336.
[7]李金玲,周刘佳,叶代勇.硫酸铜助催化制备纳米纤维素晶须[J].精细化工,2009,26(9):844-849.
[8]母军,汤立秋,张瑞涵.纳米纤维素制备及壳聚糖/NCC复合膜的性能研究[J].化工新型材料,2015,43(2):82-85.
[9]资名扬,邱礼平,胡碧君,等.甘油与甲基纤维素对高直链玉米淀粉-壳聚糖复合膜性能的影响[J].食品科学,2010,31(17):81-85.
[10]曾超珍,刘志祥,吴国辉,等.超声波提取甘草黄酮及其抑菌活性研究[J].时珍国医国药,2007,18(10):2343-2345.
[11]刘莹,王朋丽,胡美娜,等.硬脂酸对可食性膜材料性能的影响研究[J].化工新型材料,2017,45(10):241-243.
[12]贾祥祥.储存条件对玉米醇溶蛋白膜性能影响的研究[D].郑州:河南工业大学,2012.
[13]赵群.纳米微晶纤维素的制备、改性及其增强复合材料性能的研究[D].上海:东华大学,2013.
[14]Muhammad Mujtaba,Asier M Salaberria,Maria A Andres,et al.Utilization of flax(Linum usitatissimum)cellulose nanocrystals as reinforcing material for chitosan films[J].International Journal of Biological Macromolecules,2017,6(17):1-26.
[15]石光,孙林,罗穗莲,等.壳聚糖/纳米微晶纤维素复合膜的制备及性能研究[J].材料研究与应用,2008,2(4):405-409.
[16]侯敏娜,马闯,王吉德,等.温敏型羟丙基甲基纤维素/壳聚糖多孔复合膜的制备及表征[J].高分子材料科学与工程,2013,29(11):109-113.
[17]Quiroz Daniel Fernndez,lvaro Gónzlez Gómez,Mendoza Jaime Lizardi,et al.Effect of themolecular architecture on the thermosensitive properties of chitosan-g-poly(N-vinylcaprolactam)[J]. Carbohydrate Polymers,2015,134:92-101.
[18]Ding Cuicui, Zhang Min, Li Guoying. Preparation and characterization of collagen/hydroxypropyl methylcellulose(HPMC)blend film[J].Carbohydrate Polymers,2015,119:194-201.
[19]张良.羟丙基甲基纤维素/羟丙基淀粉共混体系的微观结构与性能的关系研究[D].广州:华南理工大学,2015.
[20]Li Qian,Zhou Jinping,Zhang Lina.Structure and properties of the nanocomposite films of chitosan reinforced with cellulose whiskers[J].Wiley InterScience,2009,47:1069-1077.
[21]Avik Khan,Ruhul A Khan,Stephane Salmieri,et al. Mechanical and barrier properties of nanocrystalline cellulose reinforced chitosan based nanocomposite films[J]. Carbohydrate Polymers,2012,7(37):1601-1608.