Cellular Polymers最新文献_第8页

Air inclusions in the polymer melt functioning as intrinsic physical blowing agents for the generation of foams in rotational molding 聚合物熔体中的空气夹杂物作为固有的物理发泡剂，在旋转成型中产生泡沫

IF 1.6 4区医学

Cellular Polymers Pub Date : 2020-04-23 DOI: 10.1177/0262489320920070

J. Werner, Lukas Vetter, Sebastian Hertle, M. Wolf, D. Drummer

引用次数: 2

Crystallization-induced microcellular foaming behaviors of chain-extended polyethylene terephthalate 扩链聚对苯二甲酸乙二醇酯结晶诱导的微孔发泡行为

IF 1.6 4区医学

Cellular Polymers Pub Date : 2020-04-22 DOI: 10.1177/0262489320919952

Can Jiang, Shuo Han, Shihong Chen, Hongfu Zhou, Xiangdong Wang

{"title":"Crystallization-induced microcellular foaming behaviors of chain-extended polyethylene terephthalate","authors":"Can Jiang, Shuo Han, Shihong Chen, Hongfu Zhou, Xiangdong Wang","doi":"10.1177/0262489320919952","DOIUrl":"https://doi.org/10.1177/0262489320919952","url":null,"abstract":"The microcellular foaming of chain-extended polyethylene terephthalate (CPET) by crystallization induction method was reported in this article. The crystallization behaviors of various polyethylene terephthalate (PET) samples which were affected by the combined effect of pyromellitic dianhydride, Surlyn, and CO2 were investigated. After Surlyn was added to CPET, the crystal nucleation of various CPET samples was improved, and numerous but small spherulites were generated. Two kinds of CPET samples with the content of 0 phr and 1 phr Surlyn were foamed at various temperature by batch foaming method. Changing the saturation temperature could adjust the appearance of high-temperature melting crystals which would affect the final cellular structures in various CPET foams. With the decrease of saturation temperature, the cell size decreased while cell density increased. At the saturation temperature of 265°C and 250°C, the cell density of CPET foam with Surlyn was one magnitude larger than CPET foam without Surlyn. At the saturation temperature of 247°C, the microcellular PET foams with the cell density of 109 cells cm−3 and the cell size less than 10 µm had been developed successfully.","PeriodicalId":9816,"journal":{"name":"Cellular Polymers","volume":"39 1","pages":"223 - 237"},"PeriodicalIF":1.6,"publicationDate":"2020-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1177/0262489320919952","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48395636","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4

Fabrication of poly (lactic acid) foams using supercritical nitrogen 超临界氮气法制备聚乳酸泡沫

IF 1.6 4区医学

Cellular Polymers Pub Date : 2020-03-30 DOI: 10.1177/0262489320912357

Fatemeh Farhanmoghaddam, A. Javadi

引用次数: 2

Preparation and characterization of PLA foam chain extended through grafting octa(epoxycyclohexyl) POSS onto carbon nanotubes 碳纳米管接枝八（环氧环己基）POSS扩链聚乳酸泡沫的制备与表征

IF 1.6 4区医学

Cellular Polymers Pub Date : 2020-03-19 DOI: 10.1177/0262489320912521

Wei Liu, Xunxian Zhu, Hongxiang Gao, Xiangdong Su, Xian Wu

{"title":"Preparation and characterization of PLA foam chain extended through grafting octa(epoxycyclohexyl) POSS onto carbon nanotubes","authors":"Wei Liu, Xunxian Zhu, Hongxiang Gao, Xiangdong Su, Xian Wu","doi":"10.1177/0262489320912521","DOIUrl":"https://doi.org/10.1177/0262489320912521","url":null,"abstract":"Improving foamability of poly (lactic acid) (PLA) resin is a key issue for its critical foaming applications with high-performance and ultralow density. However, owing to the rheological nature of linear PLA chain structure with relatively low molecular weight, the overall foamability of PLA resin cannot meet the processing requirements of foaming purpose. Here, we describe a simple and versatile technique to prepare high foamability PLA resin by inducing chain extender through grafting octa(epoxycyclohexyl) polyhedral oligomeric silsesquioxanes (POSS) on carbon nanotubes (CNT). After the orderly assemble of the two nanoparticles, an obvious increase in melt elasticity of PLA is observed. The enhanced melt elasticity of PLA had a significant effect on controlling subsequent foaming behavior. Thus, a homogeneous and finer cellular morphology of PLA rigid foam was obtained with a proper content of CNT-POSS. Eventually, the expansion ratio of chain-extended PLA foam was 13 times higher than that of unmodified PLA foam. The proposed design methodology will potentially pave a way for designing and preparing high-performance PLA rigid foam products.","PeriodicalId":9816,"journal":{"name":"Cellular Polymers","volume":"39 1","pages":"117 - 138"},"PeriodicalIF":1.6,"publicationDate":"2020-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1177/0262489320912521","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43366590","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 6

The effects of filler contents and particle sizes on properties of green kenaf-filled natural rubber latex foam 填料含量和粒径对绿红麻填充天然胶乳泡沫性能的影响

IF 1.6 4区医学

Cellular Polymers Pub Date : 2020-03-01 DOI: 10.1177/0262489319890201

S. Kudori, H. Ismail

引用次数: 10

Synergetic effect of nanoclay and nano-CaCO3 hybrid filler systems on the foaming properties and cellular structure of polystyrene nanocomposite foams using supercritical CO2 纳米粘土和纳米caco3杂化填料体系对超临界CO2聚苯乙烯纳米复合泡沫材料发泡性能和泡沫结构的协同效应

IF 1.6 4区医学

Cellular Polymers Pub Date : 2020-01-22 DOI: 10.1177/0262489319900948

Xinghan Lian, Wenjie Mou, Tairong Kuang, Xianhu Liu, Shuidong Zhang, Fangfang Li, Tongxun Liu, Xiangfang Peng

{"title":"Synergetic effect of nanoclay and nano-CaCO3 hybrid filler systems on the foaming properties and cellular structure of polystyrene nanocomposite foams using supercritical CO2","authors":"Xinghan Lian, Wenjie Mou, Tairong Kuang, Xianhu Liu, Shuidong Zhang, Fangfang Li, Tongxun Liu, Xiangfang Peng","doi":"10.1177/0262489319900948","DOIUrl":"https://doi.org/10.1177/0262489319900948","url":null,"abstract":"Supercritical fluids have been widely used to prepare various polymer nanocomposite foams due to their high-efficiency, rich-resource, and environment-friendly characteristics. In this work, we prepared polystyrene (PS) nanocomposites with different contents of hybrid fillers of nanoclay and nano-calcium carbonate (nano-CaCO3) and then were foamed by batch foaming method using supercritical carbon dioxide as a physical blowing agent. The effect of hybrid nanofillers components and foaming temperature and pressure on the foaming properties and cellular structure of PS nanocomposite foams was systematically investigated. Dynamic rheology results indicated that the complex viscosity and storage modulus were enhanced with the addition of hybrid fillers. Scanning electron microscopic images show that all samples foamed uniformly macrocells under the given conditions. More importantly, the hybrid fillers of nano-CaCO3 and nanoclay exhibit a significant synergistic effect in improving PS foaming properties, which can be ascribed to the different roles of the two fillers during cell nucleation and cell growth. For instance, the PS/0.22/0.88 nanocomposite foamed under the conditions of 20 MPa and 130°C has shown the finest cell structure (higher cell density of 1.91 × 1010 and smaller cell diameter of 2.28 µm) due to the coeffect of the hybrid nanofillers. Finally, the synergistic mechanism of these two nanofillers on PS foaming behavior was discussed.","PeriodicalId":9816,"journal":{"name":"Cellular Polymers","volume":"39 1","pages":"185 - 202"},"PeriodicalIF":1.6,"publicationDate":"2020-01-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1177/0262489319900948","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47098875","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Production and characterization of fully biobased foamed films based on gelatin 明胶基全生物发泡膜的制备与表征

IF 1.6 4区医学

Cellular Polymers Pub Date : 2020-01-07 DOI: 10.1177/0262489319897632

J. Solorza-Feria, M. A. Ortiz-Zarama, A. Jiménez–Aparicio, D. Rodrigue

{"title":"Production and characterization of fully biobased foamed films based on gelatin","authors":"J. Solorza-Feria, M. A. Ortiz-Zarama, A. Jiménez–Aparicio, D. Rodrigue","doi":"10.1177/0262489319897632","DOIUrl":"https://doi.org/10.1177/0262489319897632","url":null,"abstract":"The objective of this study was to produce and characterize gelatin foamed films using extrusion. Three “optimum” formulations containing tannic acid, nanoclays (Cloisite Na+), glycerol, water, and gelatin, as well as three “controls” without tannic acid and nanoclays were prepared by calendering. Furthermore, the three “optimum” formulations were produced by extrusion film blowing only, since no stable processing conditions could be obtained for the controls. A complete set of sample characterization was performed, including morphological, mechanical, physical, and thermal properties. The results showed that besides the processing method, the thickness was also controlled by the glycerol and water content, leading to density slightly above unity, with higher values for the optimum materials. The calendered films from the optimum formulations showed overall a higher number of cells and cell density than the controls. Higher elastic moduli and tensile strengths were obtained for the films from the optimum formulations made by either method because of the reinforcing effect of the tannic acid and nanoclays, but this led to lower strain at break. The thermal profiles were similar for all films, with higher stability for the optimum formulations. The results were also explained via chemical interactions between the components as observed by Fourier transform infrared spectroscopy. Overall, the optimum formulations not only produced better foamed films in terms of general properties but were much easier to process by both methods (calendering and blowing).","PeriodicalId":9816,"journal":{"name":"Cellular Polymers","volume":"39 1","pages":"69 - 97"},"PeriodicalIF":1.6,"publicationDate":"2020-01-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1177/0262489319897632","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46903097","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

The influence of blowing agent addition, talc filler content, and injection velocity on selected properties, surface state, and structure of polypropylene injection molded parts 研究了发泡剂添加量、滑石填料含量和注射速度对聚丙烯注塑件的性能、表面状态和结构的影响

IF 1.6 4区医学

Cellular Polymers Pub Date : 2020-01-01 DOI: 10.1177/0262489319873642

Paweł Palutkiewicz, M. Trzaskalska, E. Bociąga

引用次数: 12

Effect of PBAT on physical, morphological, and mechanical properties of PBS/PBAT foam PBAT对PBS/PBAT泡沫物理、形态和力学性能的影响

IF 1.6 4区医学

Cellular Polymers Pub Date : 2020-01-01 DOI: 10.1177/0262489319873859

Aekartit Boonprasertpoh, D. Pentrakoon, Jirawut Junkasem

{"title":"Effect of PBAT on physical, morphological, and mechanical properties of PBS/PBAT foam","authors":"Aekartit Boonprasertpoh, D. Pentrakoon, Jirawut Junkasem","doi":"10.1177/0262489319873859","DOIUrl":"https://doi.org/10.1177/0262489319873859","url":null,"abstract":"This study examines the effect of poly(butylene adipate-co-terephthalate) (PBAT) content on the physical, morphological, and mechanical properties of poly(butylene succinate) (PBS)/PBAT foam. A compression molding technique was used to prepare the PBS/PBAT foam using the chemical blowing agent azodicarbonamide and the cross-linking agent dicumyl peroxide. The chemical structure and morphological properties of PBS/PBAT foam were examined via Fourier transform infrared and scanning electron microscopy techniques, respectively, whereas tensile and flexural properties were investigated using a universal testing machine. The results reveal that the incorporation of PBAT barely enhances the viscosity of the PBS/PBAT blend, producing only minor changes in the average cell size of PBS/PBAT foam. However, increasing the PBAT content contributes to a relatively significant improvement in the flexibility and toughness of PBS/PBAT foam, where a decrease in Young’s modulus and tensile strength of the PBS/PBAT foam is observed compared with those of the PBS foam. Similar behavior to the tensile results is noticed for the flexural properties of the neat and PBS/PBAT foams.","PeriodicalId":9816,"journal":{"name":"Cellular Polymers","volume":"39 1","pages":"31 - 41"},"PeriodicalIF":1.6,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1177/0262489319873859","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47471159","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 18

Novel 3-D hierarchical multiconfiguration graphene/polyaniline-based aerogels with directed higher performances 具有定向高性能的新型三维分级多结构石墨烯/聚苯胺基气凝胶

IF 1.6 4区医学

Cellular Polymers Pub Date : 2020-01-01 DOI: 10.1177/0262489319885031

Rui Yao, J. Ju, Z. Yao

{"title":"Novel 3-D hierarchical multiconfiguration graphene/polyaniline-based aerogels with directed higher performances","authors":"Rui Yao, J. Ju, Z. Yao","doi":"10.1177/0262489319885031","DOIUrl":"https://doi.org/10.1177/0262489319885031","url":null,"abstract":"Novel three-dimensional (3-D) hierarchical multiconfiguration graphene/polyaniline-based aerogels were synthesized via in situ polymerization and directed freeze-drying method. The composite aerogels enhanced excellent thermal and electrical performances, at the same time, their 3-D hierarchical multiconfiguration was robust and stable, which made them more beneficial to be applied to thermal or electrical fields. Graphene oxide/polyaniline (GO/AP) and reduced graphene oxide (RGO/AP) were prepared. The multiconfiguration structure can be apparently observed through scanning electron microscopy image of GO/AP aerogel: the aerogels were composed of skeleton structure with paralleled open holes; the skeleton structure was made up by hierarchical GO sheet with AP network; and the AP network consisted of AP skeleton and nanopores. GO/AP aerogels showed higher heat resistance than single AP aerogel. In addition, compared with GO/AP and AP aerogels, RGO/AP aerogel had the best electrical performances (vertical electrical conductivity: 1.23 S cm−1 and specific capacitance: 580 F g−1). What is more, attributed to the multiconfiguration structure, the composite aerogels exhibited excellent performances in holes extending direction.","PeriodicalId":9816,"journal":{"name":"Cellular Polymers","volume":"39 1","pages":"42 - 53"},"PeriodicalIF":1.6,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1177/0262489319885031","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48157249","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1