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摘要细菌纤维素晶须（BCW）可作为橡胶中一种性能优异的绿色环保型填料。本文采用硫酸水解废弃边角料细菌纤维素（BC）制备出了长径比为 80，结晶指数高达 93.33%的BCW，选用丁苯橡胶（SBR）为基体，分别采用蒸发、模压和浇铸的工艺制备了 BCW/SBR复合膜，对BC 和BCW 的性能进行了表征，并研究了这三种制备工艺对复合膜热稳定性和水刺激-力响应等性能的影响，进一步表征了 BCW 的用量对复合膜的水溶胀性、亲水性、降解性等性能的影响，结果表明：采用蒸发法制备的含 3 份 BCW 的复合膜 24 h 的水溶胀率高达62.2%，吸水后 E’降幅达85.51%，具有良好的水刺激-力响应性能。 42575
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毕业论文关键词 丁苯橡胶，细菌纤维素晶须，复合型功能膜，水刺激-力响应性能，工艺方法
Title The processing method of BCW/SBR functional films Abstract Bacterial Cellulose Whisker(BCW) can be used as a kind of environmental friendly filter with excellent performance for rubber. In this work, the BCW was prepared by sulfuric acid hydrolysis of waste Bacterial Cellulose(BC). It was shown that BCW was rod-like with large aspect ratio of 80 and high crystalline of 93.33%. And then BCW/Styrene-butadiene rubber(SBR) films were prepared by evaporation, compression and casting, respectively. The properties of BC and BCW were characterized. The effects of the processing methods on the thermal stability and water-stimuli mechanical-responsive property of BCW/SBR films were analyzed. In addition, the effects of the content of BCW on the water swelling property, hydrophilic property as well as degradation property of BCW/SBR films were further investigated in detail. The results showed that the swollen degree of the films prepared by evaporation with 3 phr BCW was up to 62.2% after 24 h and the E’ decreased by 85.51%, which had fantastic water-stimuli mechanical-responsive property.
Keywords styrene-butadiene rubber, bacterial cellulose whisker, composite functional film, water-stimuli mechanical-responsive property, processing method
目次
1绪论·1
1.1研究背景1
1.2细菌纤维素（BC）2
1.3细菌纤维素晶须（BCW）2
1.4纤维素/橡胶功能膜综述·3
1.5本文主要研究内容·5
2实验部分·6
2.1药品与仪器·6
2.2BCW的制备·6
2.3BCW/SBR复合膜的制备·6
2.3.1蒸发法.6
2.3.2模压法.7
2.3.3浇铸法.7
2.4表征与测试·7
2.4.1透射电子显微镜（TEM）测试7
2.4.2扫描电子显微镜（SEM）测试7
2.4.3X射线衍射（XRD）7
2.4.4傅立叶变换红外光谱（FTIR）测试7
2.4.5热分析（TG）.8
2.4.6水刺激-力响应性能测试.8
2.4.7热失重分析（TGA）8
2.4.8亲水性测试.8
2.4.9降解性能测试.8
3结果与讨论9
3.1BCW的表征·9
3.1.1BC和BCW形貌分析.9
3.1.2BC和BCW的XRD分析.10
3.1.3FTIR分析.11
3.1.4热稳定性分析.11
3.2不同工艺制备的BCW/SBR复合膜性能分析12
3.2.1热稳定性分析.12
3.2.2水溶胀性能.13
3.2.3水刺激-力响应行为.15
3.3不同BCW含量的BCW/SBR复合膜16
3.3.1BCW/SBR复合膜的FTIR分析.16
3.3.2BCW在SBR基体中的分散状态.16
3.3.3BCW/SBR复合膜的热稳定性分析18
3.3.4不同BCW含量的BCW/SBR复合膜的水溶胀行为18
3.3.5BCW/SBR复合膜的亲水性分析19
3.3.6BCW/SBR复合膜的水刺激-力响应行为.21