泡沫塑料在缓冲包装上的应用及设计

详细讨论了目前泡沫塑料缓冲包装材料的应用现状和发展趋势,指出开发可降解泡沫塑料作为缓冲包装材料是今后的发展方向。同时,讨论了泡沫塑料作为缓冲包装材料的设计情况。     

聚乳酸可降解塑料食品包装研究进展及其设计应用

为了顺应世界环境保护之潮流,对可降解及无毒包装材料的研究已经成为包装材料领域的研究热点,大力推广安全无毒的可生物降解食品包装材料已成为食品包装行业未来的发展趋势。本文综述了聚乳酸作为食品包装的研究进展,介绍了其在实际商品包装中的设计应用情况,并展望了其今后的发展趋势。     

PET三大改性方向发展及应用现状—阻燃改性、高阻隔性、生物降解性

人们通过各种手段对PET进行改性,虽然研究机理各不相同,但主要都是改善PET的性能缺陷,现在世界研究热点主要集中在提高结晶速率、强度、韧性、耐热性、阻隔性、阻燃性及可降解这几个领域。本文主要从阻燃注塑增强PET、高阻隔性PET包装材料及PET可降解材料几个热点领域介绍PET的最新研究进展及应用。     

国内首家植物纤维可降解包装材料研发中心成立

近日，重庆工商大学与贵州省遵义大康绿色产品有限责任公司联手成立了“渝康可降解包装材料工程技术中心”。据悉，这是中国国内首家以桔秆等为原材料的植物纤维可降解包装材料工程技术中心。     

食用菌制全降解包装材料的研究

为了解决不可降解的废弃塑料类包装材料对环境的污染,以秸秆和木屑为主要原料,利用食用菌栽培技术制备了一种新型的、可完全降解的包装材料。采用对比实验的方法,研究了不同原料配比对菌丝生长情况的影响,结果表明,在秸秆57%、木屑30%、麸皮10%、石膏1%、石灰2%的配比下,选用平菇菌种栽培的培养基菌丝体含量最多,紧实度最好。通过材料的防水性能测试和缓冲性能比较,表明该生物质材料完全可以替代EPS(发泡聚苯乙烯)和EPE(发泡聚乙烯)等包装材料。同时,该生物质材料在土壤中可实现完全降解,为土壤提供有机肥料。     

食品包装材料对环境的影响及防治对策

介绍了纸、塑料、会属、玻璃等目前广泛使用的主要食品包装材料；分析了食品包装材料对环境的影响；提出了减少包装材料的使用、重复使用包装材料、采用可再生包装材料、利用可降解包装材料、注意保护公众安全、实施包装设计图案绿色化等防治食品包装材料对环境污染的对策。     

一种新型纤维素基包装材料的研制与应用设计

针对生物可降解包装材料的高成本、性能低等问题,制备一种以黄麻纤维、粘胶纤维和聚乳酸玉米纤维为主要原料的的纤维素基包装材料,并对其力学性能进行探究。结果表明,热压处理有利于增强纤维抱合性,从而增加材料的稳定性;黄麻/粘胶/玉米纤维最佳配比方案为50∶35∶15,此时,制备的复合包装材料的纵向断裂强力为212.35 N,横向断裂强力为126.78 N,纵向撕破强力为29.26 N,横向撕破强力为13.06 N,顶破强力为77.61 N。试验制备的黄麻/粘胶/玉米纤维素基包装材料不仅成本低、绿色环保,还具备较好的力学性能,能作为一种生物可降解包装材料应用于实际生活中。     

绿色包装的研究进展

从包装和包装材料的轻量化、薄型化、重复可再生及可降解等几个方面,综述了近年来绿色包装及其相关材料的研究与发展现状,并对未来绿色包装的发展趋势进行了分析与展望。     

可降解塑料

介绍可降解包装材料的降解机理及制备加工。     

服务园地

双降解的二氧化碳共聚物及其一次性包装材料利用二氧化碳的一个重要方向是二氧化碳为单体合成可降解的脂肪族碳酸酯,这也是控制“白色污染”的最要的策略之一。目前已发现这类材料有用作一次性可降解包装材料、可降填料、陶瓷加工用热降解粘合剂和热解包扎带的巨大潜力。目前已     

Multifunctionality of foamed poly(lactid acid) and its composites with nanofillers

Polymers derived from renewable resources focus increasingly on an interest of research institutes and industry. Replacement of traditional materials by biodegradable polymers brings about the fossil resources savings and helps solving problems related to the plastic packaging waste. Polylactide (PLA) is the most important biodegradable polyester of good mechanical properties, high transparency, and good processability. However, PLA is still more expensive than conventional plastics, moreover its biodegradation rate is moderate. Recent innovations open new fields of PLA application by means of novel nanocomposites and processing technology that provide new properties. In this article, polymeric materials of various functionalities have been presented, in particular PLA‐based functional nanocomposites (with increased barrier properties, electroconductive, or thermosensitive materials) of PLA and cellular PLA . POLYM. COMPOS., 36:1647–1652, 2015. © 2014 Society of Plastics Engineers     

Biodegradable poly(vinyl alcohol)-based nanocomposite film reinforced with organophilic layered double hydroxides with potential packaging application

The continuously increasing plastic wastes and diminishing fossil resources have attracted global attention into research and development of biodegradable packaging materials. In the present study, organophilic layered double hydroxides (OLDH) intercalated with aliphatic long-chain molecules as reinforcing agents were incorporated into biodegradable poly(vinyl alcohol) (PVA) matrix by a solution casting method. FTIR, XRD and SEM were performed to analyze the structure of PVA/OLDH films. The OLDH nanosheets were well-dispersed in PVA matrix and formed strong interfacial interactions with the PVA chains, leading to remarkable improvements of optical property, mechanical performance, water vapor barrier property and thermal stability. At a loading of only 2% OLDH in PVA, we observed ~67% decrease in haze and ~66% increment in tensile strength in the composite film compared with pure PVA film. Furthermore, a 24.22% decrease in water vapor permeability (enhancement in water vapor barrier property) due to the addition of 0.5 wt% OLDH and enhanced thermal stability could be observed. These results revealed that the overall performance could be improved by introducing OLDH at very low loadings and that the PVA nanocomposite films have potential for future application in packaging films. Therefore, the use of high-performance PVA/OLDH nanocomposite films can evidently promote the application of biodegradable PVA materials in packaging industry.     

Selected Applications of Chitosan Composites

Chitosan is one of the emerging materials for various applications. The most intensive studies have focused on its use as a biomaterial and for biomedical, cosmetic, and packaging systems. The research on biodegradable food packaging systems over conventional non-biodegradable packaging systems has gained much importance in the last decade. The deacetylation of chitin, a polysaccharide mainly obtained from crustaceans and shrimp shells, yields chitosan. The deacetylation process of chitin leads to the generation of primary amino groups. The functional activity of chitosan is generally owed to this amino group, which imparts inherent antioxidant and antimicrobial activity to the chitosan. Further, since chitosan is a naturally derived polymer, it is biodegradable and safe for human consumption. Food-focused researchers are exploiting the properties of chitosan to develop biodegradable food packaging systems. However, the properties of packaging systems using chitosan can be improved by adding different additives or blending chitosan with other polymers. In this review, we report on the different properties of chitosan that make it suitable for food packaging applications, various methods to develop chitosan-based packaging films, and finally, the applications of chitosan in developing multifunctional food packaging materials. Here we present a short overview of the chitosan-based nanocomposites, beginning with principal properties, selected preparation techniques, and finally, selected current research.     

Novel Bio-Based Materials and Applications in Antimicrobial Food Packaging: Recent Advances and Future Trends

Food microbial contamination not only poses the problems of food insecurity and economic loss, but also contributes to food waste, which is another global environmental problem. Therefore, effective packaging is a compelling obstacle for shielding food items from outside contaminants and maintaining its quality. Traditionally, food is packaged with plastic that is rarely recyclable, negatively impacting the environment. Bio-based materials have attracted widespread attention for food packaging applications since they are biodegradable, renewable, and have a low carbon footprint. They provide a great opportunity to reduce the extensive use of fossil fuels and develop food packaging materials with good properties, addressing environmental problems and contributing significantly to sustainable development. Presently, the developments in food chemistry, technology, and biotechnology have allowed us to fine-tune new methodologies useful for addressing major safety and environmental concerns regarding packaging materials. This review presents a comprehensive overview of the development and potential for application of new bio-based materials from different sources in antimicrobial food packaging, including carbohydrate (polysaccharide)-based materials, protein-based materials, lipid-based materials, antibacterial agents, and bio-based composites, which can solve the issues of both environmental impact and prevent foodborne pathogens and spoilage microorganisms. In addition, future trends are discussed, as well as the antimicrobial compounds incorporated in packaging materials such as nanoparticles (NPs), nanofillers (NFs), and bio-nanocomposites.     

纳米复合包装材料的研究与应用进展

综述了纳米复合包装材料的特点及其在食品包装领域的应用,介绍了纳米复合包装材料特有的保鲜性、抗菌性、高阻隔性等性能的研究和应用现状,并对纳米复合包装材料的安全性进行了分析评价。     

可完全生物降解的聚乳酸共混体系研究进展

综述了国内外以聚乳酸（PLA）为基础的完全生物降解共混体系的研究进展,主要包括不同光学活性的PLA共混、PLA与脂肪族聚脂共混、PLA与天然高分子共混、PLA与聚己内酯共混、PLA与聚乙二醇共混、PLA与聚乙烯醇共混以及PLA与聚乙烯基吡咯烷酮共混等。目前的研究表明,将PLA与另一种完全生物降解组分共混,通过不同组分分子间的相互作用,使PLA材料在保持环境友好性的同时提高了力学性能、增加了韧性、并降低了生产成本等,从而扩展了PLA在工程塑料领域和包装等领域的应用。     

Recently emerging trends in polymer nanocomposites packaging materials

As a result of excellent nanoparticle dispersion tendencies, polymer based nanocomposites exhibit a significantly enhanced packaging characteristics. Moreover, the feasibility of inclusion of biologically-active additives has shown great potentials of rendering enhanced functional properties to the end product. Hence, polymer nanocomposites exhibiting bio-functional propensities have revealed a broad potential for application as packaging materials in the functional food packaging industry. This is due to accruable improvements in properties such as enhancements in strength and modulus, reduced gas permeability, and increment in resistance to water. Thus, the incumbent paper discusses state of the act recently emerging trends in the preparation and characterization of polymer nanocomposites as eco-benign and biodegradable packaging materials, inaddition to their future market prospects.Emerging novelties in polymer nanocomposites packaging films.     

半纤维素改性制备膜材料

分析和概述了近年来半纤维素改性制备薄膜材料的最新研究成果。从其潜在的两个应用方面——食品包装材料和可食用包覆膜出发,分别在隔氧性、阻湿性、机械性能等方面对不同改性方法制备的半纤维素薄膜和传统的聚合物薄膜材料作了详细的比较。改性半纤维素膜具有可再生及生物降解性能,其阻隔性能与传统聚合物薄膜材料相当,可望成为一种具有广阔市场前景的新型环保材料。     

聚酯酰胺的应用及合成研究

根据聚酯酰胺的用途,介绍了用于热熔黏合剂、纤维、可生物降解材料、片材/包装材料等领域的聚酯酰胺的合成方法。     

Green synthesis of biodegradable terpolymer modified starch nanocomposite with carbon nanoparticles for food packaging application

As to control the increased rate of environmental pollution there is an urgent need to develop improved biodegradable materials regarding the old polymeric packaging materials. It has been done by the incorporation of carbon nanomaterials to the biodegradable starch terpolymers of acrylic acid, methyl methacrylate (MMA), acrylonitrile (AN), 2-Ethylhexyl acrylate (2-EHA), and Ethyl acrylate (EA). The starch-terpolymers were prepared through the free radical polymerization technique using AA, MMA, AN, 2-EHA, EA as monomers. Two different starch-terpolymers were further mixed with carbon nanoparticles (NPs) to form a biodegradable nanocomposite. The biodegradable starch-grafted terpolymers-carbon nanocomposites (STPC NCs) were characterized through scanning electron microscopy, Fourier-transform infrared spectroscopy, thermogravimetric analysis, differential scanning calorimeter, and UV–Visible spectrophotometry. Further, resistivity, electrical conductivity, and biodegradability tests were performed to check its properties for packing materials. The biodegradation of SGCP-composites recorded using the soil burial method was up to 78%. Starch-terpolymers were prepared via free-radical polymerization The biodegradation capability of starch-grafted terpolymers was found to be 78% The decrease in water vapor permeability and solubility proves their utilization as food packaging material