{"title":"Global food contact regulation updates for 2nd quarter 2024","authors":"Huqiu Zhang","doi":"10.1177/87560879241262889","DOIUrl":"https://doi.org/10.1177/87560879241262889","url":null,"abstract":"","PeriodicalId":511689,"journal":{"name":"Journal of Plastic Film & Sheeting","volume":"42 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141347947","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Shuang Lang, Xin Zhang, Guowei Liu, Liangjun Xiao, Hui Wang, Xiaojian Zhou, G. Du
{"title":"Developing a novel konjac flour/poly-vinyl alcohol composite film: Preparation, properties and characterization","authors":"Shuang Lang, Xin Zhang, Guowei Liu, Liangjun Xiao, Hui Wang, Xiaojian Zhou, G. Du","doi":"10.1177/87560879231225120","DOIUrl":"https://doi.org/10.1177/87560879231225120","url":null,"abstract":"Developing bio-based plastic has become an important strategy for solving environmental pollution. In this study, konjac flour (KF) and poly-vinyl alcohol (PVA) as main film-forming substances with added citric acid (CA), glutaraldehyde (GA) and glycerin, were used to prepare bio-based composite films via solution casting. How the PVA polymer amount affected the composite films including mechanical performance, structural properties and morphology was investigated. The results revealed that PVA polymer could obviously improve the mechanical property of the films, and the addition of 25% PVA based on KF mass when CA, GA and glycerin were fixed, was demonstrated as the optimal amount, maintaining an excellent tensile strength (TB) and elongation at break (EAB). Fourier transform infrared spectra (FT-IR) and X-ray diffraction (XRD) results indicated the successful cross-linking reaction between PVA and KF, and some further proofs could be confirmed from scanning electron microscopy (SEM) and thermogravimetry (TG). After modification with PVA, the cross section of the KF/PVA composite film was more dense and uniform, implying that PVA was well fused with KF system. Meanwhile, the films modified with PVA presented a good thermal resistance ability. This work provided an effective pathway for preparing KF/PVA composite films with improved mechanical properties, which may be an alternative way for using konjac flour.","PeriodicalId":511689,"journal":{"name":"Journal of Plastic Film & Sheeting","volume":"66 49","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139448828","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Joko Waluyo, Ibnu Tryansar Purba, Kalimaya Qolbi Sani, Nur Sayekti, Sabela Sanata Ramadhani, S. H. Pranolo, Margono, M. Kaavessina
{"title":"Bioplastic from empty fruit bunch cellulose/chitosan /starch: Optimization through box-Behnken design to enhance the mechanical properties","authors":"Joko Waluyo, Ibnu Tryansar Purba, Kalimaya Qolbi Sani, Nur Sayekti, Sabela Sanata Ramadhani, S. H. Pranolo, Margono, M. Kaavessina","doi":"10.1177/87560879231226442","DOIUrl":"https://doi.org/10.1177/87560879231226442","url":null,"abstract":"This investigation was centered on the intricate processes of fabricating and fine–tuning the concentration of microcellulose derived from oil palm empty fruit bunch (OPEFB). The objective was to employ it as a reinforcing agent, with sorbitol serving as a plasticizer, and chitosan acting as both a plasticizer and a strengthening agent for the formulation of bioplastic films to gain higher value mechanically. The cellulose extraction involved a methodical delignification approach, extracting lignin and hemicellulose from OPEFB to yield brown pulp. Subsequent double peroxide bleaching was employed to reduce the lignin concentration in the pulp. Leveraging the Box–Behnken experimental within a response surface methodology framework, the study scrutinized the influence of independent parameters (additive concentrations) on the ultimate tensile strength and Young’s modulus of the fabricated bioplastic films. Noteworthy variations in ultimate tensile strength and Young’s modulus were discerned, underscoring the impact of microparticle loading on the mechanical attributes of the bioplastic films. The quadratic polynomial model derived from experimental data exhibited coefficients of determination (R2) of 0.8690 for ultimate tensile strength and 0.6793 for Young’s modulus, affirming the adeptness of the models in navigating the optimization space. Microcellulose was isolated (30 – 40) wt.% of OPEFB as the white pulp which revealed a homogenous dispersion with chitosan in the corn starch matrix. The superior tensile strength and Young’s modulus were observed at 6.84 MPa and 21.94 MPa respectively.","PeriodicalId":511689,"journal":{"name":"Journal of Plastic Film & Sheeting","volume":"29 29","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139382548","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"State-of-the-art epoxy vitrimer nanocomposites with graphene, carbon nanotube and silica—fundamentals and applications (radiation shielding, sensing and corrosion resistance)","authors":"Ayesha Kausar, Ishaq Ahmad","doi":"10.1177/87560879241226504","DOIUrl":"https://doi.org/10.1177/87560879241226504","url":null,"abstract":"Recent research is shifting towards adopting recyclable and sustainable plastics instead of traditionally used thermosetting materials. Accordingly, vitrimers behave both as thermoplastics as well as thermosetting polymers. Inimitable vitrimer polymers have been developed with dynamically crosslinked structures enhancing the durability, reprocessing, and mechanical and chemical stability features. This state-of-the-art review discusses vitrimer nanocomposites reinforced with carbonaceous (carbon nanotube, graphene, and graphene oxide) and inorganic (silica, halloysite nanotube) nanofillers has been particularly emphasized. Beneficial structural, microstructural, mechanical strength, modulus, thermal, conducting, reprocessing, engineering, shape memory, self-healing, kinetic, and theoretical topographies have been observed with vitrimers or modified vitrimers (disulfide or ether functional) matrices along with nano-reinforcements towards multifunctional architectures. High-tech vitrimeric nanocomposites show potential regarding electromagnetic shielding, anticorrosion coatings, sensors, joints welding, adhesives, and other sectors. Versatile design compensations, degradability, reprocessability, and methodological features/applications point towards next-generation sustainable materials for modern industries. Hence, this article presents advancements in the field of high performance vitrimeric nanocomposites.","PeriodicalId":511689,"journal":{"name":"Journal of Plastic Film & Sheeting","volume":"67 13","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139385530","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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