1. 毕业设计（论文）的内容和要求

太阳光作为生命体的主要能量来源，其中紫外光波长最短，但是能量最大，因而紫外辐照会造成聚合物材料加速分解，褪色和老化过程。

同样能量较高的可见光部分，蓝光会造成人眼视网膜的损伤，导致多种眼部疾病的发生。

为解决上述高能光引起的问题，又因环境法规相继出台，人们开始日益重视聚合物回收问题，促使塑料行业往环境友好型方向开发，因此生物可降解材料的功能型引起了人们广泛的关注。

2. 参考文献

[1] Yin X, Zhang Z, Wu M, et al. Toward transparent composite films with selective solar spectral, flame retardant and thermal insulation functions[J]. Materials Chemistry and Physics. 2018, 216: 365-371. [2] Xu X, Huang S, Zhang L. Biodegradability, antibacterial properties, and ultraviolet protection of polyvinyl alcohol-natural polyphenol blends[J]. Polymer Composites. 2009, 30(11): 1611-1617. [3] Tang X, Alavi S. Recent advances in starch, polyvinyl alcohol based polymer blends, nanocomposites and their biodegradability[J]. Carbohydrate Polymers. 2011, 85(1): 7-16. [4] Peppas N A, Bernerjr. R E. Proposed method of intracordal injection and gelation of poly(vinly alcohol) solution in vocal cords - polymer cosiderations[J]. Biomaterials. 1980, 1(3): 158-162. [5] 李慧敏. 抗紫外线PVA/纳米TiO_2复合膜的制备与性能研究[D]. 湖南工业大学, 2012. [6] 李菲. 抗紫外线聚乙烯醇复合薄膜的制备及性能研究[D]. 湖南工业大学, 2011. [7] Moll C J, Meister K, Kirschner J, et al. Surface Structure of Solutions of Poly(vinyl alcohol) in Water[J]. The Journal of Physical Chemistry B. 2018, 122(47): 10722-10727. [8] Hyon S, Cha W, Ikada Y, et al. Poly(vinly alcohol) hydrogels as soft contact-lens material[J]. Journal of Biomaterials Science-Polymer Edition. 1994, 5(5): 397-406. [9] Christie M. Hassan N A P. Structure and applications of poly(vinyl alcohol) hydrogels produced by conventional crosslinking or by freezing/thawing methods[J]. Advances in Polymer Science. 2000, 153: 37-65. [10] Demerlis C C, Schoneker D R. Review of the oral toxicity of polyvinyl alcohol (PVA)[J]. Food and Chemical Toxicology. 2003, 41(3 ): 319-326. [11] Baker M I, Walsh S P, Schwartz Z, et al. A review of polyvinyl alcohol and its uses in cartilage and orthopedic applications[J]. Journal of Biomedical Materials Research Part B-Applied Biomaterials. 2012, 100B(5): 1451-1457. [12] Abdullah Z W, Dong Y, Davies I J, et al. PVA, PVA Blends, and Their Nanocomposites for Biodegradable Packaging Application[J]. Polymer-Plastics Technology and Engineering. 2017, 56(12 ): 1307-1344. [13] R. M. Hodge G H E, Simon G P. Water absorption and states of water in sernicrystalline poly(vinyl alcohol) films[J]. Polymer-Plastics Technology and Engineering. 1996, 37(8): 1371-1376. [14] 吴祥忠. 一种纳米二氧化钛复合的抗紫外线的可降解型聚乙烯醇保鲜膜及其制备方法[P]. 201711181990 .3.

3. 毕业设计（论文）进程安排

1.1-1.18 文献查询及文献翻译 3.6-3.12 开题报告并开题完成 3.13-4.16 进行实验工作 4.17－4.23 毕业设计中期检查 4.24－6.3 继续实施实验并撰写论文 6.3-6.14 论文答辩