开发一种可生物降解的薄膜,用于包装来自亚马逊生物多样性的纤维素基材料
Danillo Wisky Silva1, Felipe Gomes Batista2, Mário Vanoli Scatolino3
1Department of Production Engineering, State University of Amapá (UEAP), Post-Graduate Program in Intellectual Property and Technology Transfer for Innovation (PROFNIT), Macapá 68900-070, AP, Brazil.
Polymers
|September 9, 2023
概括
来自亚马逊森林残留物的纤维素微/纳米纤维 (MFC/NFC) 薄膜为塑料包装提供了一个可持续的替代方案. 在轻型产品包装中,阿赛种子薄膜表现出优越的强度和屏障特性.
科学领域:
- 材料科学 材料科学 材料科学
- 可持续包装 包装的可持续性
- 生物材料是一种生物材料.
背景情况:
- 对环保包装解决方案的日益增长的需求推动了对可再生资源的研究.
- 合成塑料包装带来了环境挑战,需要可持续的替代品.
- 来自植物生物质的纤维素微/纳米纤维素 (MFC/NFC) 在薄膜应用方面表现有前途.
研究的目的:
- 评估来自亚马逊森林残留物的MFC/NFC薄膜作为传统塑料包装的替代品的潜力.
- 描述MFC/NFC薄膜的物理,机械和屏障特性,这些薄膜来自açaí种子,titica葡萄树和树肉质.
- 评估使用森林残留物开发可持续包装材料的可行性.
主要方法:
- 通过机械纤维化从açaí种子 (Euterpe oleracea),titica葡萄藤 (Heteropsis flexuosa) 和树果汁中提取MFC/NFC.
- 使用获得的MFC/NFC.制作包装膜.
- 评价薄膜的性能,包括抗拉强度,水蒸气透性和耐油脂性.
主要成果:
- 与提提卡葡萄膜 (46.2 MPa) 相比,阿赛种子膜具有显著更高的抗拉强度 (97.2 MPa).
- 蒂蒂卡葡萄膜具有更高的透性 (637.3 g/天−1 m−2),表明屏障效果较差.
- 所有制作的电影都在耐油脂方面取得了很高的分数 (第12位),这表明它们具有良好的油脂恐惧性质.
- 提提卡葡萄树的机械纤维化需要更高的能量投入.
结论:
- 从亚马逊森林残留物中获得的MFC/NFC薄膜显示出包装轻质和低湿度产品的潜力.
- 与提提卡葡萄相比,基于Açaí种子的薄膜提供了优越的机械和屏障性能.
- 对节能纤维化方法的进一步研究,特别是对于蒂蒂卡葡萄,对于大规模应用至关重要.
相关概念视频
01:25Production of Organic Acids
Lactic acid, an important organic acid extensively applied in food, pharmaceutical, and biodegradable polymer industries, is primarily produced via microbial fermentation. This method is favored over chemical synthesis due to its environmental sustainability and capacity for enantiomerically pure product formation. Among various microbial processes, the fermentation of starch-based substrates stands out due to the abundance and renewability of raw materials like corn and potatoes.Hydrolysis of...
01:27Bioplastics
Bioplastics derived from microbial processes present a sustainable alternative to conventional petroleum-based plastics. Among these, polyhydroxyalkanoates (PHAs), particularly polyhydroxybutyrates (PHBs), have emerged as prominent candidates due to their biodegradability and biocompatibility. These polymers are synthesized by a variety of bacteria, such as Cupriavidus necator and Pseudomonas putida, which naturally accumulate PHAs as intracellular carbon and energy reserves, especially under...
01:28Microbial Bioremediation of Plastics
Polyethylene terephthalate (PET) is a synthetic polymer widely utilized in the packaging industry, particularly for bottles and containers. Due to its chemical stability and durability, PET accumulates in the environment, contributing significantly to plastic pollution. It comprises repeating units of terephthalic acid and ethylene glycol, resulting in a semi-crystalline structure that is resistant to natural degradation processes.A notable breakthrough in plastic biodegradation came with the...