Glycerol-plasticized spirulina-poly(vinyl alcohol) films with improved mechanical performance
Glycerol-plasticized spirulina-poly(vinyl alcohol) films with improved mechanical performance
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具有改善机械性能的甘油增塑螺旋藻-聚（乙烯醇）薄膜
DOI：
10.1002/app.44842
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发表时间：
2017
影响因子：
3
通讯作者：
He Fuan
中科院分区：
文献类型：
--
作者：
Shi Bo;Liang Liang;Yang Hui;Zhang Liming;He Fuan
采用流延法制备了螺旋藻-聚乙烯醇（PVA）-甘油（SPG）复合膜，该复合膜具有较好的力学性能，尤其是拉伸强度（TS）和断裂伸长率（EAB）。的完整性，颜色，溶解度，微观结构，热性能，拉伸强度和相容性的SPG膜进行评估。用甘油增塑后，SPG膜变得光滑、均匀、柔韧。PVA的存在以及PVA与甘油和螺旋藻蛋白质的氢键作用通过降低螺旋藻蛋白质的吸水性和减少水通过膜的扩散来改善SPG膜的耐水性。由于螺旋藻、PVA和甘油的共热解，含碳残留物的量从31%降低到14%。随着PVA含量的增加，TS从2.5增加到26 Mpa，模量从53增加到610 Mpa。甘油可提高薄膜的柔韧性，EAB高达50%。螺旋藻可以与亲水性聚合物复合，以制造具有所需机械性能的相容的、可加工的和可热回收的膜。© 2017 Wiley Periodicals，Inc. J.应用聚合物Sci.2017，134，44842.
Spirulina–poly(vinyl alcohol) (PVA)–glycerol (SPG) films with improved mechanical performance, especially tensile strength (TS) and the elongation at break (EAB), are fabricated by a casting method. The integrity, color, solubility, microstructure, thermal properties, tensile strength, and compatibility of the SPG films are assessed. SPG films became smooth, homogeneous, and flexible after plasticizing with glycerol. The presence of PVA and hydrogen bonding of PVA with glycerol and spirulina protein improves the water resistance of SPG films by decreasing water absorption of spirulina protein and decreasing water diffusion through the films. The amount of carbonaceous residues decreases from 31% to 14% because of the co‐pyrolysis of spirulina, PVA, and glycerol. TS increases from 2.5 to 26 Mpa and modulus from 53 to 610 Mpa with increasing PVA content. Glycerol enhances film flexibility and EAB up to 50%. Spirulina can be composited with hydrophilic polymers to fabricate compatible, processable and thermally recyclable films with desirable mechanical performance. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci.2017,134, 44842.