Cellular Polymers最新文献_第5页

A sound-absorbing and heat-insulating collagen fiber composite material 一种吸音隔热的胶原纤维复合材料

IF 1.6 4区医学

Cellular Polymers Pub Date : 2022-09-27 DOI: 10.1177/02624893221130154

Jiaxing Zhang Hui Chen, Z. Shan

引用次数: 0

Compressive Properties of Poly (Dimethylsiloxane)–Hollow Glass Microballoons Syntactic Foams 聚二甲基硅氧烷-中空玻璃微球复合泡沫的压缩性能

IF 1.6 4区医学

Cellular Polymers Pub Date : 2022-08-29 DOI: 10.1177/02624893221123391

Alok K Upadhyay, A. Ullas

引用次数: 1

Porous synthetic hydrogel carrying basic fibroblast growth factor with controllable and rapid degradation rate to promote wound healing 多孔合成水凝胶携带碱性成纤维细胞生长因子，降解速度可控、快速，促进伤口愈合

IF 1.6 4区医学

Cellular Polymers Pub Date : 2022-08-26 DOI: 10.1177/02624893221120535

Qian Wu, Huijie Gu, Haiyan Cui, Shu Zhou

{"title":"Porous synthetic hydrogel carrying basic fibroblast growth factor with controllable and rapid degradation rate to promote wound healing","authors":"Qian Wu, Huijie Gu, Haiyan Cui, Shu Zhou","doi":"10.1177/02624893221120535","DOIUrl":"https://doi.org/10.1177/02624893221120535","url":null,"abstract":"Porous hydrogel dressings show breathability and possibility to carry and release basic fibroblast growth factor (bFGF) to promote wound healing. However, the difficult replacement may lead to the secondary damage. Thus, there is an urgent need to develop a method platform to control the degradation rate of hydrogel, so as to realize the on-demand replacement. The present study fabricated a porous hydrogel from co-polymized N,N′-bis(acryloyl) cystamine (BAC), allyl polyethylene glycol 500 (APEG500) and acrylic acid (AA) with the presence of polycaprolactone (PCL). BAC contains disulfide bond, which crosslinked the hydrogel. The pore size of the porous hydrogel was 400–600 μm. Higher content of BAC indicated higher crosslinking density, which reduced swelling ratio of hydrogel, while promoted hydrogel storage modulus. At the same time, the presence of PCL reduced swelling ratio of hydrogel, while promoted hydrogel mechanical properties, endowing hydrogel with tough feature. Porous hydrogels that crosslinked by disulfide bonds immersed in glutathione solution were found to degrade spontaneously and quickly due to the response to glutathione. Both crosslinking density and PCL content affected the degradation rate. The porous hydrogel carrying bFGF was applied to wound, promoting angiogenesis, thus accelerating wound healing within 12 d. Due to the spontaneous and rapid degradation of optimized porous hydrogel on wound within 3 days, there was no operation of removing dressing during treatment, avoiding damage during dressing replacement.","PeriodicalId":9816,"journal":{"name":"Cellular Polymers","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2022-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49356022","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: 0

Rigid polyurethane foam composites based on iron tailing: Thermal stability, flame retardancy and fire toxicity 基于铁尾矿的硬质聚氨酯泡沫复合材料:热稳定性、阻燃性和火毒性

IF 1.6 4区医学

Cellular Polymers Pub Date : 2022-05-26 DOI: 10.1177/02624893221105317

Yadong Yang, Hai-jian Shen, Yuzhou Luo, Renhui Zhang, Junjie Sun, Xiuyu Liu, Zhifang Zong, Gang Tang

{"title":"Rigid polyurethane foam composites based on iron tailing: Thermal stability, flame retardancy and fire toxicity","authors":"Yadong Yang, Hai-jian Shen, Yuzhou Luo, Renhui Zhang, Junjie Sun, Xiuyu Liu, Zhifang Zong, Gang Tang","doi":"10.1177/02624893221105317","DOIUrl":"https://doi.org/10.1177/02624893221105317","url":null,"abstract":"In order to explore the potential utilization value of iron tailings, the typical solid waste-iron tailings was introduced into rigid polyurethane foam (RPUF) as a flame retardant filler in this paper. The flame retardant performance, combustion performance, gas-phase products and char residue’s related properties of RPUF/ITS composites were systematically investigated by limiting oxygen index, thermogravimetric (TG), cone calorimetry (CCT) and thermogravimetric-infrared spectrometry (TG-FTIR). The results showed that ITS improved the overall thermal stability of the composites, and the T-5%, T-50%, Tmax1, Tmax2 and char residue rates were all higher than those of the pure samples. The CCT indicated that ITS had a certain effect on smoke suppression and heat release reduction. The peak heat release rate of RPUF-6 was reduced by 22.75% compared with that of the pure sample, and the total smoke release of RPUF-2 was reduced by 25.36%. Smoke factor (SF), fire growth rate index and fire performance index indicated that ITS reduced the fire risk of RPUF/ITS composites. TG-FTIR showed that ITS inhibited the decomposition of RPUF/ITS composites, and the release intensity of hydrocarbons, CO2, isocyanate compound, CO, aromatic compounds and esters decreased significantly. TG, MCC, scanning electron microscope and Raman implied that ITS promoted the formation of a dense char layer in RPUF and improved the heat resistance of the char layer.","PeriodicalId":9816,"journal":{"name":"Cellular Polymers","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2022-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42672779","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

Phenolic syntactic foams: Low-density composites for structural and thermostructural applications 酚醛合成泡沫:用于结构和热结构应用的低密度复合材料

IF 1.6 4区医学

Cellular Polymers Pub Date : 2022-05-16 DOI: 10.1177/02624893221101147

B. John, CP Reghunadhan Nair

引用次数: 0

Synthesis and properties of foams from a blend of vegetable oil based polyhydroxyurethane and epoxy resin 植物油基聚羟基聚氨酯与环氧树脂共混泡沫的合成及性能研究

IF 1.6 4区医学

Cellular Polymers Pub Date : 2022-05-13 DOI: 10.1177/02624893221101170

Z. Ahmad, P. Mahanwar

{"title":"Synthesis and properties of foams from a blend of vegetable oil based polyhydroxyurethane and epoxy resin","authors":"Z. Ahmad, P. Mahanwar","doi":"10.1177/02624893221101170","DOIUrl":"https://doi.org/10.1177/02624893221101170","url":null,"abstract":"This article aims to highlight the synthesis of foams from a blend of hydroxyurethane of castor oil and epoxy resin. An epoxidized castor oil of 4% oxirane oxygen was first converted to cyclic carbonate of castor oil at 120°C, 1 atm CO2 pressure and then it was reacted with three different aliphatic diamines to yield amine terminated Polyhydroxyurethane (PHU). Foams were prepared in a metal mould from the blend of PHU, epoxy resin, epoxy hardener and polymethylhydrogensiloxane blowing agent which releases hydrogen gas upon reaction with amine. FTIR and 1H NMR of cyclic carbonate of castor oil and PHU of castor oil were done to confirm their chemical structures. Optical microscopy and scanning electron microscopy of foams was done to assess their cellular morphology along with DSC and TGA to evaluate their thermal properties. Both flexible and rigid type of foams were synthesised in this study. Resilience of flexible foams was inspected using a ball rebound test and compression-recovery test while thermal insulation property was checked by measuring thermal conductivity, thermal diffusivity and R-values of rigid foams from heat transfer study using a heat transfer apparatus.","PeriodicalId":9816,"journal":{"name":"Cellular Polymers","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2022-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45797347","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

Effect of strain rate and load orientation on cyclic response of anisotropic polyurethane foam 应变速率和载荷方向对各向异性聚氨酯泡沫循环响应的影响

IF 1.6 4区医学

Cellular Polymers Pub Date : 2022-04-13 DOI: 10.1177/02624893221084895

Dorra Ben Abdeljelil, S. Chatti, Raja O Ahmed Ben Ali

引用次数: 1

Micro foaming performance of scCO2-aid glutaraldehyde/hexametaphosphate/thermoplastic starch foams modified by alkali treatment and montmorillonite nano-platelets 碱处理和蒙脱土纳米片改性scco2助戊二醛/六偏磷酸酯/热塑性淀粉泡沫的微发泡性能

IF 1.6 4区医学

Cellular Polymers Pub Date : 2022-03-07 DOI: 10.1177/02624893211073539

Keng-ben Wang, Ya‐qiong Huang, Xiaoming Cheng, J. Yeh

{"title":"Micro foaming performance of scCO2-aid glutaraldehyde/hexametaphosphate/thermoplastic starch foams modified by alkali treatment and montmorillonite nano-platelets","authors":"Keng-ben Wang, Ya‐qiong Huang, Xiaoming Cheng, J. Yeh","doi":"10.1177/02624893211073539","DOIUrl":"https://doi.org/10.1177/02624893211073539","url":null,"abstract":"The micro foaming performance, moisture resistance and dynamic viscosity of scCO2-aid glutaraldehyde/hexametaphosphate/thermoplastic tapioca starch (GA/SHMP/TOS) foams were considerably improved by proper NaOH treatment. The expansion ratio, resilience rate, dynamic viscosity values of these NaOH modified foams improved to a maximum, as the time for NaOH treatment approached a proper value. The dynamic viscosity, expansion ratio and resilience rate of the scCO2-aid GA/SHMP/TOS foams modified using 110 atm scCO2-pressure, the proper alkali treatment time, SHMP loading and varying montmorillonite (MMT) loadings improved further, as their MMT loadings approached a proper value of 2.5 part per hundred parts of tapioca starch (PHTOS). Relatively large dynamic viscosity (7.1x104 Pa·s), extremely large expansion ratio (∼75), cell density (1.1x109 cells/cm3) and/or resilience rate (∼80%) were acquired for the scCO2-aid GA/SHMP/TOS/MMT foam modified using the proper alkali treatment time and MMT loading. Thermal analyses results showed that crystallization onset temperatures and crystallization rates of scCO2-aid GA/SHMP/TOS/MMT foams modified using the proper alkali treatment time and varying MMT loadings improved to a highest value by adding 2.5 PHTOS of MMT nano-platelets. Possible reasons accounting for the considerably improved micro foaming performance of scCO2-aid GA/SHMP/TOS/MMT foams modified using the proper alkali treatment time and MMT loading are proposed in this study.","PeriodicalId":9816,"journal":{"name":"Cellular Polymers","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2022-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46611982","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: 0

Fire retardancy, thermal, and physico-mechanical properties of semi-rigid water-blown polyurethane foam from palm oil-based polyol 棕榈油基多元醇制备的半刚性水吹聚氨酯泡沫的阻燃性、热性能和物理机械性能

IF 1.6 4区医学

Cellular Polymers Pub Date : 2022-02-23 DOI: 10.1177/02624893211061633

M. H. Dzulkifli, M. Yahya, R. A. Majid

引用次数: 2

Development and investigation of the applicability of computed tomography data-based modelling technique for polymeric high-density foams 基于计算机断层扫描数据的聚合物高密度泡沫建模技术的发展和适用性研究

IF 1.6 4区医学

Cellular Polymers Pub Date : 2021-12-23 DOI: 10.1177/02624893211061631

Anna Hössinger-Kalteis, M. Reiter, M. Jerabek, Z. Major

{"title":"Development and investigation of the applicability of computed tomography data-based modelling technique for polymeric high-density foams","authors":"Anna Hössinger-Kalteis, M. Reiter, M. Jerabek, Z. Major","doi":"10.1177/02624893211061631","DOIUrl":"https://doi.org/10.1177/02624893211061631","url":null,"abstract":"As foams have become very important in several areas and since characterizing their properties is a crucial task, a finite element simulation model for high-density closed cell foams based on computed tomography (CT) measurements is developed. The model includes realistic microstructural features like cell size distribution due to the utilization of CT data. Moreover, a ‘skin-core-skin’ microstructure resulting from the manufacturing process (injection moulding) of the foams is also considered in the model. The mechanical behaviour of the foam’s core layer under tension and compression load is characterized based on the microstructural model to develop constitutive material models of the foam. These constitutive models enable further mechanical characterization of the foam with less computational effort. Compression and bending test simulations of injection moulded foams with three different densities are validated with corresponding experimental results. Thus, conclusions can be drawn regarding the reliability, applicability and possible further extensions of the high-density foam model.","PeriodicalId":9816,"journal":{"name":"Cellular Polymers","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2021-12-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41430920","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: 0