Characterization and Layer-by-layer Self-assembly of PVA/NCC/PVA
LIU Zhi-ming1, WU Peng1, XIE Cheng1, WANG Hai-ying2, MENG Wei2
1. Key Laboratory of Bio-based Material Science and Technology of Ministry of Education,College of Material Science and Engineering,Northeast Forestry University,Harbin 150040,China;
2. College of Forestry, Northeast Forestry University,Harbin 150040,China
Abstract:The composite membrane of polyvinyl alcohol(PVA) / nanocrystalline cellulose(NCC)/ PVA was prepared by layer-by-layer(LBL) self-assembly based on the driving force of hydrogen bonding. The single-phase distribution of NCC and PVA, the NCC lattice arrangement state and the structure of NCC as an interlayer were verified through attenuated total reflection infrared (ATR-IR), scanning electron microscopy (SEM) and X-ray diffraction (XRD). The mechanism hypothesis was proposed to argue the formation process of this composite membrane. Through the measurements of tensile strength, light transmittance and thermal stability, it indicates that the PVA/NCC/PVA composite membrane from LBL self-assembly has high tensile strength, high transmittance and much more thermal stability. Compared to PVA membrane, the tensile strength and light transmittance of the composite membrane improve 46.1% and 5.44%, respectively, as well as the thermal stability increases 13.2℃. This indicates that the PVA/NCC/PVA composite membrane from LBL self-assembly is a good functional membrane.
[1] 邢丽, 张复实, 向军辉, 等.自组装技术及其研究进展[J]. 世界科技研究与发展, 2007, 29(3): 39-44.XING L, ZHANG F S, XIANG J H, et al. Technology and research progress based on self-assembly[J]. World Sci-Tech R & D, 2007, 29(3): 39-44.[2] 刘海林, 马晓燕, 袁莉, 等. 分子自组装研究进展[J]. 材料科学与工程学报, 2004, 22(2): 308-311.LIU H L, MA X Y, YUAN L, et al. Molecule self-assembly technology and its research advances[J]. Journal of Materials Science and Engineering, 2004, 22(2): 308-311.[3] 余海湖, 周灵德, 姜德生. 纳米材料与自组装技术[J]. 自然杂志, 2002, 24(4): 216-218.YU H H, ZHOU L D, JIANG D S. Nanostructured materials and self-assembly technology[J]. Nature Magazine, 2002, 24(4): 216-218.[4] 李家桐, 陈敏, 王长伟, 等. 分子自组装技术基底材料的研究进展[J]. 材料导报, 2011, 25(6): 76-78, 83.LI J T, CHEN M, WANG C W, et al. Research progress on the substrate of molecular self-assembling technology[J]. Materials Review, 2011, 25(6): 76-78, 83.[5] DECHER G, HONG J D. Build-up of ultrathin multilayer films by a self-assembly process:Ⅰ consecutive adsorption of anionic and cationic bipolar amphiphiles on charged surfaces[J]. Makromolekulare Chemie Macromolecular Symposia,1991,46(1):321-327.[6] STOCKTON W B, RUBNER M F. Molecular-level processing of conjugated polymers. 4. Layer-by-layer manipulation of polyaniline via hydrogen-bonding interactions[J]. Macromolecules, 1997, 30 (9): 2717-2725.[7] 吕德水, 林汉枫, 李扬眉, 等. LBL自组装技术及自组装生物功能膜结构[J]. 功能高分子学报, 2001, 14(4): 499-503.LV D S, LIN H F, LI Y M, et al. Studies of the layer-by-layer self-assembly and the microstructure of the biomolecules self-assembling functional films[J]. Journal of Functional Polymers, 2001, 14(4): 499-503.[8] 任科峰, 沈利燕, 孙婕衎, 等. 生物大分子层层自组装:从生物分子的固定,界面控释到细胞外基质模拟[J]. 中国科学:化学, 2011, 41(2): 239-249.REN K F, SHEN L Y, SUN J K, et al. Layer-by-layer self-assembly of biomacromolecules from biomolecules immobilization, local delivery to a robust tool to mimic extracelluar matrix[J]. Scientia Sinica:Chimica , 2011, 41(2): 239-249.[9] ŠTURCOVÁ A, DAVIES G R, EICHHORN S J. Elastic modulus and stress-transfer properties of tunicate cellulose whiskers[J]. Biomacromolecules, 2005, 6(2):1055-1061.[10] HELBERT W, CAVAILLÉ J Y, DUFRESNE A. Thermoplastic nanocomposites filled with wheat straw cellulose whiskers. Part I: processing and mechanical behavior[J]. Polymer Composites, 1996, 17(4):604-611.[11] NISHINO T, TAKANO K, NAKAMAE K. Elastic modulus of the crystalline regions of cellulose polymorphs[J]. Journal of Polymer Science, Part B: Polymer Physics, 1995, 33(11):1647-1651.[12] 唐丽荣, 黄彪, 戴达松, 等. 聚乙烯醇/纳米纤维素晶体复合膜热学性能[J]. 林业科学, 2011, 47(11): 144-148. TANG L R, HUANG B, DAI D S, et al. The crystallization behaviors and thermal properties of PVA/NCC composite films[J]. Scientia Silvae Sinicae, 2011, 47(11): 144-148.[13] 白露, 张力平, 曲萍, 等. 聚乙烯醇/纳米纤维素复合膜的渗透汽化性能及结构表征[J]. 高等学校化学学报, 2011, 32(4): 984-989. BAI L, ZHANG L P, QU P, et al. Pervaporation properties and characterization of poly(vinyl alcohol)/cellulose nanocrystal composite membranes[J]. Chemical Journal of Chinese Universities, 2011, 32(4): 984-989.[14] 潘超, 董丽, 汪静, 等. 采用层层组装技术制备TiO2中空纳米纤维膜催化剂[J]. 材料工程, 2008,(10): 145-149,153. PAN C, DONG L, WANG J, et al. Fabrication of TiO2 hybrid hollow nanofibrous photocatalyst by electrostatic layer by layer technique[J]. Journal of Materials Engineering, 2008,(10): 145-149,153.[15] RACHIPUDI P S, KARIDURAGANAVAR M Y, KITTUR A A, et al. Synthesis and characterization of sulfonated-poly(vinyl alcohol) membranes for the pervaporation dehydration of isopropanol[J]. Journal of Membrane Science, 2011, 383(1-2): 224-234.[16] YAMAURA K, NAITOH M. Preparation of high performance films from poly(vinyl alcohol)/NaCl/H2O systems[J]. Journal of Material Science, 2002, 37(4): 705-708.[17] YEOM C K, LEE K H. Pervaporation separation of water-acetic acid mixtures through poly(vinyl alcohol) membranes crosslinked with glutaraldehyde[J]. Journal of Membrane Science, 1996, 109(2): 257-265.[18] 罗晓刚. 再生纤维素微球的制备、结构和功能. 武汉: 武汉大学, 2010.[19] 张春雪, 袁晓燕, 邬丽丽, 等. 电纺聚乙烯醇超细纤维膜的性能研究[J]. 高分子学报, 2006,(2): 294-297. ZHANG C X, YUAN X Y, WU L L, et al. Properties of ultrafine fibrous poly(vinyl alcohol) membranes by electrospinning[J]. Acta Polymerica Sinica, 2006,(2): 294-297.