Journal of Polymer Research最新文献

{"title":"Deep eutectic solvent and poly (vinyl alcohol) based eutectogels: Characterization and properties","authors":"Victoria Vorobyova,&nbsp;Margarita Skiba,&nbsp;Denys Baklan,&nbsp;Georgii Vasyliev","doi":"10.1007/s10965-024-04149-3","DOIUrl":"10.1007/s10965-024-04149-3","url":null,"abstract":"<div><p>In this work, deep eutectic polymer blend Choline chloride with polyvinyl alcohol (PVA) and eutectogel based on PVA and deep eutectic solvent (DES) (Choline Chloride-Xylitol) were synthesized. Quantum chemistry calculations (QCC) and Fourier transforms middle infrared (FTIR), C^l3 and H¹ NMR spectroscopy were used to study the interactions between Choline Chloride and Xylitol at the formation of DES. The H–H interaction in the DES was detected in the 4.0 to 6.5 ppm range in H¹ NMR, corresponding to hydrogen bonding between hydroxyl groups and chloride ions. QCC show that DES is a stable solvent with an energy gap between the donor and the acceptor of 0.39 eV. The thermal stability, viscosity and electrical resistance of the DES have been studied. The perspective of using a DES to obtain a hydrophilic polymer was shown. The FTIR results reveal that intermolecular hydrogen bonds are formed between PVA and Choline Chloride and DES Choline Chloride-Xylitol in the composites. The physical properties (thermal stability) of hydrophilic polymers were investigated. The T_onset, of the DES is 160 ºC, T_decomp, ºC amounts to 280 ºC. For the polymers the T_decom up to 300 and 410 ºC were increases by the Choline Chloride or DES addition, respectively. The DES has fairly high electrical (0.129 Sm/m). The eutectogel also exhibited good functional properties such as stability in various pH and absorptivity capacity. Every sample showed maximal swelling at acidic pH and reduced swelling at neutral pH; hydrogels began to swell once again at pH = 9.18. The addition of Choline Chloride and DES did not affect the microstructure of PVA. While the microstructures of PVA and the blend of PVA and Choline Chloride exhibited comparable morphologies, there was little variation when compared to pure PVA at a Choline Chloride level of 10:3. Additionally, a series of experiments was carried out to assess the eutectic polymer blend and DES-Based eutectogel antibacterial efficacy against <i>C. albicans</i>.</p></div>","PeriodicalId":658,"journal":{"name":"Journal of Polymer Research","volume":"31 10","pages":""},"PeriodicalIF":2.6,"publicationDate":"2024-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142414801","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Influence of microstructure and tribology properties on deep-dipping coating method of sappanwood (SW)/ polyvinyl alcohol (PVA)/ Polyethylene (PE)/ Aluminium nitride (AlN) natural fiber nanocomposite materials","authors":"G. Venkatesan,&nbsp;R. Selvabharathi,&nbsp;K. Kulathuraan,&nbsp;V. Vivek","doi":"10.1007/s10965-024-04151-9","DOIUrl":"10.1007/s10965-024-04151-9","url":null,"abstract":"<div><p>The natural fiber nanocomposite materials employed in this study, which included sappanwood (SW), polyvinyl alcohol (PVA), polyethylene (PE), aluminum nitride (AlN), and epoxy resin (EP), were made by hand lay-up processes. Acryl Silane Coupling Agent (ASCA) was employed in the deep-dip coating method to enhance the tribology and microstructure of the natural fiber nano composite materials. For composite materials made of sappanwood and polyethylene, the resin microstructure was largely responsible for the observed homogeneous phase and hexagonal structure. The solid outer and secondary phases of the outer and inner surface layers of the EP-PE-SW-AlN composite materials were created using the silane coating process. Tensile properties of EP-PVA-SW-PE-AlN samples were reached at 42.8 MPa, and three-point bending tests were reached at 47.6 MPa. Furthermore, 597 °C was obtained for EP-PVA-SW-PE-AlN composite materials on TGA results. The average hardness value of (60) EP combined (10%) PVA, (10%) SW, (10%) PE, and (10%) AlN nano particle was highly present 98 (shore-D) throughout the silane coating process. Wear resistance and friction tests were performed on EP-PVA-SW-AlN, EP-PE-SW-AlN, and EP-PVA-SW-PE-AlN composite materials in order to improve the outer surface layers and interior composite structure. Dimples, micro voids, microscopic holes, and basket voids were seen on the fracture surfaces of each composite sample.</p></div>","PeriodicalId":658,"journal":{"name":"Journal of Polymer Research","volume":"31 10","pages":""},"PeriodicalIF":2.6,"publicationDate":"2024-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142414816","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Enhancing heat-resistance of epoxy with conductive and crosslink networks by designing imide-based chain extender","authors":"Renyu Yang,&nbsp;Lin Gan,&nbsp;Jin Huang","doi":"10.1007/s10965-024-04118-w","DOIUrl":"10.1007/s10965-024-04118-w","url":null,"abstract":"<div><p>Electromagnetic coatings on aircraft need high heat tolerance because high-speed friction bring high temperature. However, high molecular interaction and strong bonding, related to high heat-resistance, lower down the molecular motion ability, causing non-uniform dispersion of conductive fillers, especially for the epoxy type coatings, which has crosslink network. Here, we developed a novel curing system merging diethylenetriamine and dicarboxylic phthalimide to enhance temperature resistance and filler dispersion in epoxy resin. This system allows imide, strong bonding to enhance heat-resistance, to extend the chain of the epoxy resin, maintaining the molecular motion ability and optimizing the dispersion of fillers. Our study reveals that the epoxy composite’s decomposition temperature rises to 383.8℃, suitable for speeds exceeding Mach 3. Additionally, the percolation threshold for carbon black fillers drops to 8.1 <i>vol.</i>%, much lower than the traditional volume-exclusive systems (<i>ca.</i> 70 <i>vol.</i>%). This finding confirms the maintained molecular motion ability of epoxy segments in crosslink netwrok. The electrical performance with volume resistivity dropping to 0.2 Ω·m when filler content is at the percolation threshold, meeting anti-static product requirements. This work proves that designing chain extenders can achieve high heat tolerance with minimal influence in crosslink and conductive networks.</p></div>","PeriodicalId":658,"journal":{"name":"Journal of Polymer Research","volume":"31 10","pages":""},"PeriodicalIF":2.6,"publicationDate":"2024-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142414097","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Investigation on effects of waste glass powder reinforced HDPE composites for sustainability","authors":"Sandeep Kumar Pandey,&nbsp;Rajeev Nayan Gupta","doi":"10.1007/s10965-024-04138-6","DOIUrl":"10.1007/s10965-024-04138-6","url":null,"abstract":"<div><p>The current study explores the fabrication of 3D printing filament using waste glass powder (WGP) and high-density polyethylene (HDPE) thermoplastic aiming to enhance the mechanical properties and sustainability of the composite material. The matrix and filler were blended in varying weight ratios (HDPE: WGP) of 100:0, 95:5, 90:10, 85:15, and 80:20 to prepare a raw material for filament extrusion. The filament of diameter 1.65 ± 0.05 mm diameter was extruded. Thereafter, a chemical and thermo-mechanical characterization of extruded filament was conducted. Fourier-transform infrared spectroscopy (FTIR) analysis confirmed the successful integration of WGP into the HDPE matrix, while X-ray diffraction (XRD) examination revealed alterations in crystallinity attributed to WGP reinforcement. Thermogravimetric Analyzer (TGA) analysis demonstrated enhanced thermal stability upon WGP incorporation, which is attributed to its role as a thermal barrier. Tensile test exhibit 45.41% and 17.22% increase in yield stress and ultimate tensile stress for 90:10 composition ratio, respectively. Moreover, including waste glass powder in HDPE, thermoplastic composite offers a sustainable solution for repurposing glass waste, thereby reducing the volume of glass destined for landfills or incineration. Potential applications of this composite filament include its use in construction, automotive, and packaging industries through 3D printing, where improved mechanical properties and sustainability are highly valued.</p></div>","PeriodicalId":658,"journal":{"name":"Journal of Polymer Research","volume":"31 10","pages":""},"PeriodicalIF":2.6,"publicationDate":"2024-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142414176","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Research on characterization methods for the anti-sagging performance of polyethylene","authors":"Jingfan Wang,&nbsp;Yucheng Jin,&nbsp;Liqi Zhuang,&nbsp;Ruiheng He,&nbsp;Shicheng Zhao","doi":"10.1007/s10965-024-04145-7","DOIUrl":"10.1007/s10965-024-04145-7","url":null,"abstract":"<div><p>The quality of anti-sagging performance directly influences the application scope of bimodal polyethylene. Although research exists on the characterization methods of anti-sagging performance in bimodal polyethylene, few studies have indicated which testing methods can most accurately characterize this property. This study compares different testing indicators, including melt flow index, melt strength, rheological behavior, molecular weight, and entanglement of molecular chains, to identify the most precise ones for characterizing the anti-sagging performance of polyethylene. A comprehensive analysis combining the properties of the test materials and the test results indicates that zero shear viscosity and relaxation time can effectively characterize the anti-sagging resistance properties of polyethylene. In contract, melt flow index, melt strength, and entanglement of molecular chains are inadequate for accurately characterizing anti-sagging performance. This study will provide an effective and accurate method for characterizing the modification of anti-sagging performance of polyethylene.</p></div>","PeriodicalId":658,"journal":{"name":"Journal of Polymer Research","volume":"31 10","pages":""},"PeriodicalIF":2.6,"publicationDate":"2024-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142413530","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Properties and microstructure of fly ash geopolymer modified with beta-phosphogypsum","authors":"Bowen Feng,&nbsp;Zhenzhen Lu","doi":"10.1007/s10965-024-04146-6","DOIUrl":"10.1007/s10965-024-04146-6","url":null,"abstract":"<div><p>Phosphogypsum (PG), a by-product of the phosphate industry, poses environmental pollution due to long-term solid waste accumulation caused by natural processes. In this study, control and modified fly ash-based geopolymers were prepared with different contents of beta-phosphogypsum. The physical properties and durability of modified fly ash-based geopolymers as pavement materials were investigated for macroscopic tests. Microscopic analysis, including XRD, FT-IR, SEM, and BET, was characterized to reveal the mechanism. The results indicated that the modified fly ash-based geopolymer demonstrated a considerable mechanical strength when utilizing a 40% content PG substitution of fly ash, under the cured circumstance of 3d, 7d, and 28d. Moreover, suitable contents of beta-phosphogypsum effectively reduced the setting time and water absorption of fly ash-based geopolymer. Necessary durability tests of modified fly ash based geopolymer were also conducted. The XRD and FT-IR analyses confirmed that beta-phosphogypsum enhanced the geopolymer modification by the promotion of gels production. The SEM analysis indicated that appropriate beta-phosphogypsum substitution efficiently formed denser structures and decreased porosity, which was confirmed in BET test, thereby enhancing the physical properties and durability. The aforementioned material represents new, environmentally sustainable base-course materials which effectively enhances the utilization of beta-phosphogypsum waste.</p></div>","PeriodicalId":658,"journal":{"name":"Journal of Polymer Research","volume":"31 10","pages":""},"PeriodicalIF":2.6,"publicationDate":"2024-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142413401","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Facile preparation of TPU/PCL/carbon nanotubes double-percolation conductive nanocomposite and evaluation of the application as flexible sensors for rapid and selective response in volatile organic compounds","authors":"Aiping Zhang,&nbsp;Han Yang,&nbsp;Hailan Lin,&nbsp;Xinkang Li,&nbsp;Shangke Yang,&nbsp;Jun Bian,&nbsp;Daiqiang Chen,&nbsp;Xuguang Cai","doi":"10.1007/s10965-024-04143-9","DOIUrl":"10.1007/s10965-024-04143-9","url":null,"abstract":"<div><p>Severe environmental pollution resulting from improper emissions of volatile organic gases (VOCs) has posed significant menaces to human health, ecosystem security, and the pursuit of socially sustainable development. Herein, we present a convenient approach to crafting conductive gas-sensitive nanocomposites with double-percolation microstructure by employing a blend of thermoplastic polyurethane (TPU) and polycaprolactone (PCL) as the compositing matrix, combined with multi-walled carbon nanotubes (MWCNTs) as the functional nanofiller. The analysis of the interface energy between the components inside the nanocomposites revealed that MWCNTs were preferentially dispersed within the TPU phase. By adjusting the TPU-to-PCL ratio and the adding sequence of components during compositing, a two-phase continuous matrix structure and a double-percolation conductive microstructure were attained, which was benefited to the enhancement of electrical conductivity. When the mass ratio of TPU-to-PCL was fixed at 50:50, the lowest resistivity of the TPU/PCL/MWCNTs nanocomposite, measuring 2.57 × 10⁵Ω·m was achieved when MWCNTs were initially blended with TPU followed by PCL. Gas-sensitive assessments of the TPU/PCL/MWCNTs nanocomposite revealed its exceptional selectivity, responsiveness, and recovery to formaldehyde, surpassing other targeted VOCs such as benzene, xylene, ammonia, and ethanol. Notably, gas responsiveness to formaldehyde at 25 °C and 500 ppm registers at 74% for the TPU/PCL/MWCNTs nanocomposites. Furthermore, responsiveness exhibits a robust linear correlation with increasing formaldehyde concentration.</p></div>","PeriodicalId":658,"journal":{"name":"Journal of Polymer Research","volume":"31 10","pages":""},"PeriodicalIF":2.6,"publicationDate":"2024-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142413402","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Synthesis and characterization of polymethylhydrosiloxane using dichloromethane as a candidate material for vitreous substitution","authors":"Tiara Nurmadanti,&nbsp;Diba Grace Auliya,&nbsp;Nabillah Fa’diyyah Zahra,&nbsp;Shaula Aurrora Isa Mardiana,&nbsp;Lusi Safriani,&nbsp;Risdiana Risdiana","doi":"10.1007/s10965-024-04128-8","DOIUrl":"10.1007/s10965-024-04128-8","url":null,"abstract":"<p>Polydimethylsiloxane (PDMS) is a common material as vitreous humor substitution in vitreoretinal surgery. PDMS is obtained from octamethylcyclotetrasiloxane (D4) monomer. However, alternative synthesis methods that might be more accessible or efficient under local conditions need to be developed. Therefore, finding other materials as an alternative to substitute vitreous humor is necessary. This article presents the results of the synthesis and characterization of polymethylhydrosiloxane (PMHS), produced using dichloromethylsilane (DCHS) as a precursor and dichloromethane (DCM) as a solvent, as a potential material for vitreous substitution in ophthalmological procedures. The focus is on exploring the two-stage process, namely the hydrolysis method to produce short-chain PMHS and the condensation method to produce long-chain PMHS that meet the requirements to be used as vitreous humor substitution. The polymerization process was accelerated by heating and assisted by potassium hydroxide (KOH). The short-chain PMHS had a viscosity of 50 mPa.s, a refractive index of 1.3954, and a surface tension of 18 mN/m, while the long-chain PMHS had a viscosity of 930 mPa.s, a refractive index of 1.3978, and a surface tension of 19 mN/m, respectively. The PMHS was characterized using FTIR spectroscopy and NMR spectroscopy. It was found that Si-H as a typical functional group of PMHS was observed from FTIR spectroscopy. From the NMR characterization, the possible long-chain PMHS structure is -O-{-SiH(CH3)-}n-O which shows that the sample has polymerized well producing long chains. All the characterization results of the synthesized PMHS showed that this material has potential as a candidate material for vitreous substitution.</p>","PeriodicalId":658,"journal":{"name":"Journal of Polymer Research","volume":"31 10","pages":""},"PeriodicalIF":2.6,"publicationDate":"2024-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142412956","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Retraction Note: Sulfonated polysulfone containing phenyl side chain as proton exchange membrane","authors":"Zongwen Qiao,&nbsp;Jiaqi Deng,&nbsp;Tao Chen","doi":"10.1007/s10965-024-04141-x","DOIUrl":"10.1007/s10965-024-04141-x","url":null,"abstract":"","PeriodicalId":658,"journal":{"name":"Journal of Polymer Research","volume":"31 10","pages":""},"PeriodicalIF":2.6,"publicationDate":"2024-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142412483","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The flame retardant cyclic olefin copolymer composites with boric acid modified ZSM-5 synergists","authors":"Xiaokun Zhai,&nbsp;Jiajia Gu,&nbsp;Qin Ma,&nbsp;Yuwei Jin,&nbsp;Ruiyan Zhang,&nbsp;Faliang Luo","doi":"10.1007/s10965-024-04090-5","DOIUrl":"10.1007/s10965-024-04090-5","url":null,"abstract":"<div><p>Cyclic olefin copolymer (COC) is recognized as a prospective material for thermal insulation foam in the construction industry. Nonetheless, enhancing its flame retardancy is problematic due to the carbon and hydrogen elements present in its macromolecular chains. In this study, we introduce a boric acid-modified zeolite socony mobil No. 5 (BZ5) as a synergist to develop an intumescent flame retardant (IFR) COC composite. We employed scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDS), the limiting oxygen index (LOI), cone calorimetry testing (CCT), and fourier-transform infrared spectroscopy (FTIR) to investigate the composite's surface morphology, distribution of flame retardants, and the characteristics of the carbon residue's structure and morphology. The incorporation of BZ5 as a synergist significantly improved the LOI value to a maximum of 28.5%, surpassing the 15.3% observed in the unmodified COC. Additionally, the char residue content increased from 0.97% to 19.7% with BZ5 in the COC composite. SEM and FTIR analyses revealed a denser microscopic carbon residue structure post-boron modification. Our findings indicate that an appropriate content of boric acid modification effectively enhances the flame retardancy of COC.</p></div>","PeriodicalId":658,"journal":{"name":"Journal of Polymer Research","volume":"31 10","pages":""},"PeriodicalIF":2.6,"publicationDate":"2024-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142255686","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}