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| 木质素磺酸钠与PVA共混薄膜的制备与表征 | |
| 引用本文： | 黎先发,罗学刚. 木质素磺酸钠与PVA共混薄膜的制备与表征[J]. 化工学报, 2011, 62(6): 1730-1735. DOI: 10.3969/j.issn.0438-1157.2011.06.038 |
| 作者姓名： | 黎先发 罗学刚 |
| 作者单位： | 西南科技大学生命科学与工程学院 |
| 摘 要： | 以木质素磺酸钠(LS)和聚乙烯醇(PVA)为主要原料,添加适量硼砂、明胶在水溶液中溶解共混,流延成膜.通过单因素和正交实验优选了LS/PVA共混膜制备的条件,对共混膜进行了耐水性、形貌、红外、热重、X射线衍射及差示扫描量热分析.结果表明:影响共混膜性能的主要因素有LS含量、硼砂含量以及反应时间,当硼砂含量为2.0%时,... |
| 关 键 词： | 共混膜 聚乙烯醇 木质素磺酸钠 性能表征 |
Preparation and characterization of sodium lignosulfonate/ PVA blend films |
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| LI Xianfa,LUO Xuegang. Preparation and characterization of sodium lignosulfonate/ PVA blend films[J]. Journal of Chemical Industry and Engineering(China), 2011, 62(6): 1730-1735. DOI: 10.3969/j.issn.0438-1157.2011.06.038 | |
| Authors: | LI Xianfa LUO Xuegang |
| Abstract: | With reproducible sodium lignosulfonate（LS）and poly〖DK〗(vinyl alcohol〖DK〗)(PVA)as primary materials, as well as borax and gelatin, a series of blend films were prepared by the film casting method.The process conditions for preparing the blend films with good water resistance and mechanical properties were determined by single factor and orthogonal experiments.Water resistance, SEM, FT IR, TGA, DSC and XRD analysis of blend films were performed to examine the contribution of LS, gelatin and borax to the properties of the blend films.The results indicated that the properties mainly were affected by the mass ratio of LS to borax and reaction time.By adding 2.0% borax, tensile strength was highly improved compared with pure PVA film(43.98 MPa vs 15.2 MPa).SEM studies showed that LS content affected the dispersion of LS/PVA films, while a proper amount of gelatin improved the compatibility between LS and PVA matrix.FT IR analysis revealed the formation of a strong intermolecular hydrogen bonding between LS carbonyl and PVA hydroxyl.According to TGA analysis, the LS/PVA blend films were more thermally stable than single component films.Compared to pure PVA films, the apparent decrease in crystallinity caused by the incorporation between LS and PVA was observed by FT IR, DSC and XRD. |
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