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Mechanical and physicochemical properties of green bio-films from poly(Vinyl Alcohol)/ nano rice hull fillers
Polymer Bulletin ( IF 3.1 ) Pub Date : 2021-06-07 , DOI: 10.1007/s00289-021-03757-z
A. Ganesh Babu , S. S. Saravanakumar

On the total earth wastes, nearly one-third was packaging wastes. Most of the packaging materials are non-biodegradable and non-recyclable. To overcome these issues, researchers turned their attention to develop biodegradable films(bio-films). In this article, through the solution casting method bio-films were developed by using water-soluble polyvinyl alcohol (PVA) and various proportions (5–25wt%) of rice hull powder as reinforcement filler. The effect of RHP on the PVA matrix was investigated by fourier-transform infrared spectroscopy (FTIR), x-ray diffraction (XRD), thermogravimetric analysis, differential scanning calorimeter, tensile test, surface morphology studies, water vapor permeability, and antibacterial testing. FTIR result revealed the proper bonding between PVA/RHP in bio-films via strong hydrogen bonds. XRD result reveals a slight increase in the intensity of bio-films and the crystalline size was reported between 5.53 and 13.28 nm. The infusion of RHP in the matrix shows that tensile strength and tensile modulus increases gradually and reaches the maximum value of 23.32 MPa and 684 MPa respectively at 25% of RHP in PVA. Thermal behavior proved that the bio-films were strong enough to withstand the temperature up to 350 °C. The lower values of WVP possess a higher interaction of polymer chains. The bio-film samples form a good inhibition zone against both gram-positive and gram-negative bacteria and display remarkable antibacterial activity. From the microstructure images, it is visible that bio-films were homogenous, away from cracks and phase separation. By this evidence, RHP added PVA can be used as a packaging material.



中文翻译:

聚乙烯醇/纳米稻壳填料绿色生物膜的力学和理化性能

在地球废物总量中,近三分之一是包装废物。大多数包装材料是不可生物降解和不可回收的。为了克服这些问题,研究人员将注意力转向开发可生物降解的薄膜(bio-films)。在本文中,通过使用水溶性聚乙烯醇 (PVA) 和不同比例 (5-25wt%) 的稻壳粉作为增强填料,通过溶液浇铸法开发了生物膜。通过傅里叶变换红外光谱 (FTIR)、X 射线衍射 (XRD)、热重分析、差示扫描量热仪、拉伸试验、表面形态研究、水蒸气渗透率和抗菌试验研究了 RHP 对 PVA 基质的影响。FTIR 结果揭示了生物膜中 PVA/RHP 之间通过强氢键的适当结合。XRD 结果显示生物膜强度略有增加,据报道晶体尺寸在 5.53 和 13.28 nm 之间。基体中RHP的注入表明,在PVA中RHP为25%时,拉伸强度和拉伸模量逐渐增加,分别达到最大值23.32 MPa和684 MPa。热行为证明生物膜的强度足以承受高达 350 °C 的温度。较低的 WVP 值具有较高的聚合物链相互作用。生物膜样品对革兰氏阳性菌和革兰氏阴性菌均形成良好的抑菌圈,并显示出显着的抗菌活性。从微观结构图像可以看出,生物膜是均匀的,远离裂纹和相分离。由该证据表明,RHP 添加的 PVA 可用作包装材料。基体中RHP的注入表明,在PVA中RHP为25%时,拉伸强度和拉伸模量逐渐增加,分别达到最大值23.32 MPa和684 MPa。热行为证明生物膜的强度足以承受高达 350 °C 的温度。较低的 WVP 值具有较高的聚合物链相互作用。生物膜样品对革兰氏阳性菌和革兰氏阴性菌均形成良好的抑菌圈,并显示出显着的抗菌活性。从微观结构图像可以看出,生物膜是均匀的,远离裂纹和相分离。由该证据表明,RHP 添加的 PVA 可用作包装材料。基体中RHP的注入表明,在PVA中RHP为25%时,拉伸强度和拉伸模量逐渐增加,分别达到最大值23.32 MPa和684 MPa。热行为证明生物膜的强度足以承受高达 350 °C 的温度。较低的 WVP 值具有较高的聚合物链相互作用。生物膜样品对革兰氏阳性菌和革兰氏阴性菌均形成良好的抑菌圈,并显示出显着的抗菌活性。从微观结构图像可以看出,生物膜是均匀的,远离裂纹和相分离。由该证据表明,RHP 添加的 PVA 可用作包装材料。热行为证明生物膜的强度足以承受高达 350 °C 的温度。较低的 WVP 值具有较高的聚合物链相互作用。生物膜样品对革兰氏阳性菌和革兰氏阴性菌均形成良好的抑菌圈,并显示出显着的抗菌活性。从微观结构图像可以看出,生物膜是均匀的,远离裂纹和相分离。由该证据表明,RHP 添加的 PVA 可用作包装材料。热行为证明生物膜的强度足以承受高达 350 °C 的温度。较低的 WVP 值具有较高的聚合物链相互作用。生物膜样品对革兰氏阳性菌和革兰氏阴性菌均形成良好的抑菌圈,并显示出显着的抗菌活性。从微观结构图像可以看出,生物膜是均匀的,远离裂纹和相分离。由该证据表明,RHP 添加的 PVA 可用作包装材料。从微观结构图像可以看出,生物膜是均匀的,远离裂纹和相分离。由该证据表明,RHP 添加的 PVA 可用作包装材料。从微观结构图像可以看出,生物膜是均匀的,远离裂纹和相分离。由该证据表明,RHP 添加的 PVA 可用作包装材料。

更新日期:2021-06-07
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