Polymer Bulletin最新文献_第9页

Preparation and characterization of poly (vinyl alcohol) (PVA)/basmati rice starch (BRS) blend films cross-linked with aliphatic and aromatic carboxylic acids for food preservation and packaging 用于食品保鲜和包装的与脂肪族和芳香族羧酸交联的聚（乙烯醇）（PVA）/茉莉香米淀粉（BRS）共混膜的制备与表征

IF 3.2 3区化学

Polymer Bulletin Pub Date : 2024-07-16 DOI: 10.1007/s00289-024-05389-5

Lubna Gulnar, Summyia Masood, Wajeeha Asad, Azhar Rasul, Zinayyera Subhani, Warda Rehman

{"title":"Preparation and characterization of poly (vinyl alcohol) (PVA)/basmati rice starch (BRS) blend films cross-linked with aliphatic and aromatic carboxylic acids for food preservation and packaging","authors":"Lubna Gulnar, Summyia Masood, Wajeeha Asad, Azhar Rasul, Zinayyera Subhani, Warda Rehman","doi":"10.1007/s00289-024-05389-5","DOIUrl":"https://doi.org/10.1007/s00289-024-05389-5","url":null,"abstract":"In the current study, three different carboxylic acids were incorporated as a cross-linker into the blend films of polyvinyl alcohol (PVA) and basmati rice starch (BRS) at a 70/30 ratio and plasticized with glycerol. The cross-linking succeeds through the creation of ester bonds between the free hydroxyl groups of PVA/BRS and the C = O groups. The effect of this cross-linking on physicochemical properties (film thickness, retraction ratio, moisture content, water absorption, and water vapor permeability) and optical (transmittance and color analysis), antimicrobial, and antioxidant properties was assessed. The current findings showed that COA incorporation into the PVA/BRS blend films demonstrated better hydrophobicity and excellent UV light-blocking properties. The incorporation of COA has no impact on radical scavenging activity; however, the cinnamic acid- and benzoic acid-containing films at higher percentages possess antimicrobial properties. FTIR studies confirm the existence of hydrogen bonding interactions among the PVA/BRS blend film and COA. The study encompasses the swelling properties of the blend film in water, brine, and seawater. The cast blend films can be utilized for the packaging purposes of foodstuffs.","PeriodicalId":737,"journal":{"name":"Polymer Bulletin","volume":null,"pages":null},"PeriodicalIF":3.2,"publicationDate":"2024-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141720299","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Exploration of cellular uptake and endocytosis mechanisms for doxorubicin-loaded poly (amino acid) nanocarriers 多柔比星负载聚（氨基酸）纳米载体的细胞摄取和内吞机制探索

IF 3.1 3区化学

Polymer Bulletin Pub Date : 2024-07-15 DOI: 10.1007/s00289-024-05413-8

Zaheer Ahmad, Nasima Arshad, H. Alsaab, Z. Selamoğlu, Afzal Shah

引用次数: 0

Synthesized the cold-resistant plasticizer epoxidized 1,6-hexanediol oleate and effects on the properties of polyvinyl chloride 合成耐寒增塑剂环氧化 1,6- 己二醇油酸酯及其对聚氯乙烯性能的影响

IF 3.1 3区化学

Polymer Bulletin Pub Date : 2024-07-15 DOI: 10.1007/s00289-024-05420-9

Kuiyun Dong, Caihong Xue, Hui Nan, Wenyan Huang, Heyan Zhong, Guangxi Liu, Guijun Yang, Shiai Xu, Jingjing Zhang

引用次数: 0

Formulation and characterization of quercetin-loaded gelatin microspheres for drug delivery and their evaluation 用于给药的槲皮素明胶微球的制备和表征及其评估

IF 3.1 3区化学

Polymer Bulletin Pub Date : 2024-07-15 DOI: 10.1007/s00289-024-05401-y

V. P. Shibin, Bindu R. Nair

引用次数: 0

A comprehensive review on genipin: an efficient natural cross-linker for biopolymers 基因素综合评述：生物聚合物的高效天然交联剂

IF 3.1 3区化学

Polymer Bulletin Pub Date : 2024-07-15 DOI: 10.1007/s00289-024-05406-7

Marwa I. Wahba

引用次数: 0

Polypyrrole nanofibers/phosphorus-doped graphene nanocomposite for efficient room temperature real-time monitoring of ammonia 用于高效室温实时监测氨气的聚吡咯纳米纤维/掺磷石墨烯纳米复合材料

IF 3.1 3区化学

Polymer Bulletin Pub Date : 2024-07-15 DOI: 10.1007/s00289-024-05422-7

Ravinder Singh, Sunil Agrohiya, Ishpal Rawal, A. Ohlan, S. Dahiya, R. Punia, A. S. Maan

引用次数: 0

Influence of heat treated fox tail millet husk biosilica on dynamic properties of nettle fibre-reinforced vinyl ester composite 热处理狐尾粟壳生物二氧化硅对荨麻纤维增强乙烯基酯复合材料动态特性的影响

IF 3.2 3区化学

Polymer Bulletin Pub Date : 2024-07-14 DOI: 10.1007/s00289-024-05378-8

R. Prabu, G. Yuvaraj, M. Satthiyaraju

{"title":"Influence of heat treated fox tail millet husk biosilica on dynamic properties of nettle fibre-reinforced vinyl ester composite","authors":"R. Prabu, G. Yuvaraj, M. Satthiyaraju","doi":"10.1007/s00289-024-05378-8","DOIUrl":"https://doi.org/10.1007/s00289-024-05378-8","url":null,"abstract":"This study offers a detailed examination of vinyl ester composites strengthened with nettle fibres and annealed biosilica from foxtail millet husk biomass waste. The primary objective is to investigate how the different dwell time processed heat treated biosilica particles perform under repeated and prolonged loading applications in natural fibre-reinforced polymer composite materials. The biosilica particles were annealed at 1200 °C and dwelled for 2 h and 4 h. The results highlight VNS32 (resin with nettle fibre of 30 vol.% and biosilica of 2 vol.%) as the superior composite, exhibiting higher fatigue counts of 29,108, 27,898, and 26,247 for 25%, 50%, and 75% of the ultimate tensile strength (UTS). Similarly, VNS32 demonstrates superior values in creep and dynamic mechanical analysis (DMA). In creep testing, VNS32 shows creep strain values of 0.0015, 0.0019, and 0.0035 for 5000 s, 10,000 s, and 15,000 s, while in DMA, it achieves a storage modulus of 5.6 GPa at 107 °C and a loss factor of 0.42. These findings suggest that the utilization of prolonged annealed biosilica contributes to enhanced structural integrity and uniform load transfer, both in normal and cyclic loading conditions at specific temperatures. Moreover, these composites could be used in automotives, lightweight building material applications, drones, defence and food packaging where lightweight and high strength is required.","PeriodicalId":737,"journal":{"name":"Polymer Bulletin","volume":null,"pages":null},"PeriodicalIF":3.2,"publicationDate":"2024-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141614453","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Compatibilization of poly(butylene adipate-co-terephthalate)/polylactic acid blends by gamma radiation 利用伽马辐射实现聚（己二酸丁二醇酯-共对苯二甲酸酯）/聚乳酸混合物的相容

IF 3.2 3区化学

Polymer Bulletin Pub Date : 2024-07-13 DOI: 10.1007/s00289-024-05428-1

Fernanda Andrade Tigre da Costa, Elizabeth Carvalho Leite Cardoso, Alain Dufresne, Duclerc Fernandes Parra

{"title":"Compatibilization of poly(butylene adipate-co-terephthalate)/polylactic acid blends by gamma radiation","authors":"Fernanda Andrade Tigre da Costa, Elizabeth Carvalho Leite Cardoso, Alain Dufresne, Duclerc Fernandes Parra","doi":"10.1007/s00289-024-05428-1","DOIUrl":"https://doi.org/10.1007/s00289-024-05428-1","url":null,"abstract":"Polylactic acid (PLA) is a widely used biopolymer and is currently produced on a global scale. However, PLA has low melt strength, which limits its application. Poly(butylene adipate-co-terephthalate) (PBAT) is a fully biodegradable polymer and one of the most attractive polymers for hardening PLA. As PLA and PBAT are immiscible, they need to be compatibilized to improve the properties of the blend. In this context, the compatibilization of PLA/PBAT blends was investigated through an irradiation process. PLA was previously irradiated, at different absorbed doses, in a cobalt-60 source to assess the compatibility of its blends with PBAT. Differential scanning calorimetry showed a reduction in the glass transition, cold crystallization and melting temperatures, and a second melting peak was observed after polymer irradiation. Also, X-ray diffraction analyses revealed a slight increase in the crystalline fraction. Thermogravimetric analysis showed that as the absorbed dose increased, the thermal stability of PLA decreased. Fourier-transform infrared spectroscopy shows bands attributed to oxidized terminations of polymer chains with carbonyls attributed to the effect of irradiation exposure. For samples irradiated above 100 kGy, an increase in tensile strength and tensile modulus can be observed as the dose increases. Rheological measurements showed a decrease in the complex viscosity of irradiated PLA with increasing absorbed dose. The surface of the polymer blend with PLA irradiated with gamma rays at 150 kGy appears to be more homogeneous according to scanning electron analysis. The polymer blend with 150 kGy irradiated PLA showed improved interaction between the components.","PeriodicalId":737,"journal":{"name":"Polymer Bulletin","volume":null,"pages":null},"PeriodicalIF":3.2,"publicationDate":"2024-07-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141614399","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Preparation, characterization and application of the Pb-ion-imprinted polymers based on epoxy resin and polyamide-amine dendrimers 基于环氧树脂和聚酰胺-胺树枝状聚合物的铅离子压印聚合物的制备、表征和应用

IF 3.2 3区化学

Polymer Bulletin Pub Date : 2024-07-13 DOI: 10.1007/s00289-024-05417-4

Sining Zhu, Zhibo Yan, Yuzhuo Zhang, Fan Zhang, Xingli Zhu, Chen Xi

引用次数: 0

Calcium alginate microspheres coated by bio-based UV-cured resin with high water retention performance 生物基紫外线固化树脂涂覆的海藻酸钙微球具有高保水性能

IF 3.2 3区化学

Polymer Bulletin Pub Date : 2024-07-13 DOI: 10.1007/s00289-024-05421-8

Tingting Yu, Xu Wang, Yuehang Hu, Yang Zhao, Cenming Zhu, Liang Cheng, Linghan Kong, Han Zheng, Baoshan Yue, Jianbo Zhan, Zhenhua Yu, Hao Wang, Ying Zhang

{"title":"Calcium alginate microspheres coated by bio-based UV-cured resin with high water retention performance","authors":"Tingting Yu, Xu Wang, Yuehang Hu, Yang Zhao, Cenming Zhu, Liang Cheng, Linghan Kong, Han Zheng, Baoshan Yue, Jianbo Zhan, Zhenhua Yu, Hao Wang, Ying Zhang","doi":"10.1007/s00289-024-05421-8","DOIUrl":"https://doi.org/10.1007/s00289-024-05421-8","url":null,"abstract":"In this work, a bio-based resin of acrylated epoxidized soybean oil (AESO) mixed with three types of active diluents (Isoborneol methacrylates [IBOMA], tripropylene glycol diacrylate [TPGDA], and Ethoxylated trimethylolpropane triacrylate [ETPTA]) is used to form a protective UV-curable coating film on calcium alginate water-carrying microspheres (CA-WCMs). Calcium alginate microspheres (CAMs) have previously been used to encapsulate only ester soluble or oil-in-water core materials, thus limiting their application. After UV-curing with an increased active diluent dose, the pencil hardness, pendulum hardness, and mechanical strength of the CAMs increased. A photopolymerization kinetics study reveals that the maximum double bond (C=C) conversion rates of AESO-IBOMA, AESO-TPGDA, and AESO-ETPTA are 95, 92, and 86%, respectively, and the maximum conversion rate of C=C bond is 87% in their mixed system. Additionally, the water retention rate of the water-carrying microspheres (WCMs) increased with an increasing number of coating layers, plateauing after the number of layers exceeded four. The water retention is favorable, with more than 75% of the water stored for a duration of 50 days. Overall, the cost-effective and environmentally friendly method has shown encouraging results in the acquisition of water-absorbing CAMs, with the potential to overcome existing implementation constraints.","PeriodicalId":737,"journal":{"name":"Polymer Bulletin","volume":null,"pages":null},"PeriodicalIF":3.2,"publicationDate":"2024-07-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141609295","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0