Polymer最新文献_第10页

Innovative poly(2,6-dimethy-1,4-phenylene) oxide nanomaterials by shear spinning solution

IF 4.1 2区化学

Polymer Pub Date : 2025-03-06 DOI: 10.1016/j.polymer.2025.128234

Mohit Pathak , Mariateresa Lettieri , Christophe Daniel

引用次数: 0

Investigation of mechanical and physical properties of chemically foamed Polylactic acid for the purpose of plant growth

IF 4.1 2区化学

Polymer Pub Date : 2025-03-06 DOI: 10.1016/j.polymer.2025.128243

Kaleum Meaney , Ke Gong , Michael Gaffney , Alexandre Portela , Declan Devine , Crevan O'Donnell , Yuanyuan Chen

{"title":"Investigation of mechanical and physical properties of chemically foamed Polylactic acid for the purpose of plant growth","authors":"Kaleum Meaney , Ke Gong , Michael Gaffney , Alexandre Portela , Declan Devine , Crevan O'Donnell , Yuanyuan Chen","doi":"10.1016/j.polymer.2025.128243","DOIUrl":"10.1016/j.polymer.2025.128243","url":null,"abstract":"<div><div>This study was to investigate the mechanical and physical properties of chemically foamed Polylactic acid (PLA) for the purpose of plant growth in horticulture. PLA is a biodegradable polymer that shows promising suitability in varied fields by incorporating certain chemical foaming agents (CFA). For this study, we blended PLA with varied CFA concentrations using hot melt extrusion (HME) and then characterized the batches of PLA/CFA blends to optimize plant growth. The conducted studies (i.e., density, water holding content (WHC), foam expansion, porosity, and air-filled porosity (AFP) demonstrated that the addition of CFAcould improve the structural properties of PLAand support plant growth by enhancing water retention based on the porous structure in the finalized blends. In addition, a saturation point can be observed beyond which the additional CFA has no significant effect on the density, porosity, or water-holding capacity of the PLA matrix. Regarding the mechanical performance, a negative impact of CFA concentration can be seen, where the tensile strength reduced from 32.61 MPa to 15 MPa, and Young's modulus decreased from 0.792 GPa to 0.365 GPa for the finalized blends. In addition, an elevated potential of Hydrogen (pH) value can be seen based on the increasing CFA concentrations, where a pH7 can be found in the 0 wt% and a pH8.4 can be found in the 50 wt% CFA. This high pH value decreases the mineral nutrients and, therefore, a growth inhibition can be seen. Overall, this study advances the understanding of foamed PLA as a potential alternative to peat as a growing media and lays a foundation in sustainable plant growth substrate, including a substituted foaming agent such as critical CO<sub>2</sub> extrusion and an addition of a controlled-release fertilizer to promote the effectiveness of PLA matrix.</div></div>","PeriodicalId":405,"journal":{"name":"Polymer","volume":"324 ","pages":"Article 128243"},"PeriodicalIF":4.1,"publicationDate":"2025-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143570106","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Synthesis and multiple responsiveness study of Poly(N-isopropylacrylamide) containing azopyridine

IF 4.1 2区化学

Polymer Pub Date : 2025-03-06 DOI: 10.1016/j.polymer.2025.128219

Xiaoqiang Xue , Yangjing Chen , Xuepei Miao , Jian Liu , Yi Ding , Yuheng Zhang , Yunkai Sun , Wenyan Huang , Qimin Jiang , Hongting Pu

{"title":"Synthesis and multiple responsiveness study of Poly(N-isopropylacrylamide) containing azopyridine","authors":"Xiaoqiang Xue , Yangjing Chen , Xuepei Miao , Jian Liu , Yi Ding , Yuheng Zhang , Yunkai Sun , Wenyan Huang , Qimin Jiang , Hongting Pu","doi":"10.1016/j.polymer.2025.128219","DOIUrl":"10.1016/j.polymer.2025.128219","url":null,"abstract":"<div><div>Environmentally sensitive polymer materials exhibit diverse properties due to their ability to respond to external environmental changes such as light, temperature, pH, and et al. These responses lead to corresponding alterations in their structure or state, resulting in unexpected performance. In this study, azo pyridine groups were introduced into the end groups and side chains of PNIPAM to synthesize two distinct polymer structures (PNIPAM-AZO and P (NIPAM-<em>co</em>-PAZO-<em>co</em>-OEGMA). This integration enables the polymers to respond to multiple stimuli, including temperature, light, pH, and gas (CO<sub>2</sub>). A comprehensive investigation of the properties of these multi-responsive polymer materials was conducted. The findings reveal that the presence of azo pyridine units enables both polymers to modulate the (lower critical solution temperature) LCST of PNIPAM through UV, pH, and CO<sub>2</sub>, with a maximum temperature adjustment of 13 °C when CO<sub>2</sub> is introduced. This modulation range is influenced by the azo pyridine content in the polymer. Notably, when azo pyridine is present only at the polymer end group, the maximum LCST regulation range is limited to 3 °C. Moreover, the LCST of the two polymers can also be adjusted by pH. In the presence of carbonate ions, the protonation of azo pyridine by carbonic acid increases the solubility of the polymer and enhances the LCST. Introducing argon gas removes CO<sub>2</sub>, thereby restoring the polymer's solubility and LCST to their neutral condition levels. By alternately introducing CO<sub>2</sub> and argon gas, the LCST of the polymer exhibits cyclic changes.</div></div>","PeriodicalId":405,"journal":{"name":"Polymer","volume":"324 ","pages":"Article 128219"},"PeriodicalIF":4.1,"publicationDate":"2025-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143570109","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Hydrophobic deep eutectic solvents as plasticizers in low-density polyethylene films

IF 4.1 2区化学

Polymer Pub Date : 2025-03-06 DOI: 10.1016/j.polymer.2025.128238

Özgür Küçükçakır, Adnan Fatih Dağdelen

{"title":"Hydrophobic deep eutectic solvents as plasticizers in low-density polyethylene films","authors":"Özgür Küçükçakır, Adnan Fatih Dağdelen","doi":"10.1016/j.polymer.2025.128238","DOIUrl":"10.1016/j.polymer.2025.128238","url":null,"abstract":"<div><div>In this study, the performance of hydrophobic deep eutectic solvents (HbDESs) as plasticizers for low-density polyethylene (LDPE) films was investigated, and the results were compared with those of di(2-ethylhexyl) phthalate (DEHP) plasticizers. DESs were produced by mixing choline chloride (ChCl) (hydrogen bond acceptor, HBA) with hexanoic acid (HA) and pentanoic acid (PA) as hydrogen bond donors (HBDs) at 1:1 and 1:2 M ratios. The prepared DESs were added to LDPE at two different ratios based on polymer weight (10 % and 30 %), and twin-screw extruder was used for film production. The densities of the plasticizers were determined to be 1 g/cm<sup>3</sup> and below, viscosities ranging from 11 to 203 mPa s, the pH was above 1 and the volatility exceeded 0.9 %. FTIR and DSC analyses indicated that bonding interactions between HBA and HBD were established, confirming the successful production of DESs. After adding the plasticizers to the LDPE films at specific rates, the films were characterized based on mechanical, barrier, optical, thermal, molecular bond, microstructural, water behavior properties, and overall migration (OM) analyses. Among the films, the first three with the best properties (CH1:30, CP1:30, and DEHP:30) were identified using the multicriteria decision hierarchy technique (TOPSIS). When comparing the films with DESs to the control group and those with DEHP, significantly better results were achieved in terms of the elongation, barrier performance, light transmittance, and OM values. These findings demonstrate the potential of HbDESs as effective plasticizers in LDPE films.</div></div>","PeriodicalId":405,"journal":{"name":"Polymer","volume":"324 ","pages":"Article 128238"},"PeriodicalIF":4.1,"publicationDate":"2025-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143570107","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Unravelling crosslinking and molecular structure in complex polyurethanes via advanced multinuclear solid-state NMR

IF 4.1 2区化学

Polymer Pub Date : 2025-03-06 DOI: 10.1016/j.polymer.2025.128245

Akshay Kumar , Arno P.M. Kentgens

{"title":"Unravelling crosslinking and molecular structure in complex polyurethanes via advanced multinuclear solid-state NMR","authors":"Akshay Kumar , Arno P.M. Kentgens","doi":"10.1016/j.polymer.2025.128245","DOIUrl":"10.1016/j.polymer.2025.128245","url":null,"abstract":"<div><div>A crucial aspect of creating cutting-edge chemical processes that enhance mechanical strength, stability, sustainability, and circularity is acquiring a more profound comprehension of the atomic-scale structure of native polymers. In this work, we present a multinuclear <sup>13</sup>C and <sup>15</sup>N solid-state NMR combined with fast magic angle spinning (fast-MAS) <sup>1</sup>H NMR at high magnetic field (22.3 T) in characterizing thermoplastic polyurethanes (PUs) chemistry. The study highlights the significance of performing atomic-scale characterization to obtain an accurate chemical picture of the polymers, especially when investigating crosslinking among polymer chains. This is because indirect confirmation of crosslinking, such as through molecular weight gains or losses, can only provide an incomplete picture, due to the complex chemical structure involved. Moreover, given that variations in synthesis parameters, such as the ratio of reactants, can significantly influence the properties of polyurethanes, it is essential to establish structure-function relationships in these polymers.</div><div>This research notably emphasizes the significance of fast-MAS 1D <sup>1</sup>H NMR at high-field in characterizing multiple polyurethane samples within a brief experimental duration of minutes. The study demonstrates that fast-MAS <sup>1</sup>H NMR facilitates straightforward chemical shift assignment and enables quantitative comparison of chemical compositions among three complex PU samples synthesized with distinct reactant proportions. Finally, this study examines the limitations of <sup>1</sup>H fast-MAS NMR, particularly in the context of characterizing low levels of crosslinking in polyurethanes. Despite the inherent low sensitivity of <sup>15</sup>N nuclei, this research demonstrates that <sup>15</sup>N Cross-Polarization (CPMAS) NMR experiment serves as robust method for the unambiguous detection of allophanates in polyurethanes.</div></div>","PeriodicalId":405,"journal":{"name":"Polymer","volume":"325 ","pages":"Article 128245"},"PeriodicalIF":4.1,"publicationDate":"2025-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143570112","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effect of the interaction anisotropy of the nanoparticle surface on the glass transition temperature of polymer nanocomposites

IF 4.1 2区化学

Polymer Pub Date : 2025-03-05 DOI: 10.1016/j.polymer.2025.128188

Taisei Ueda , Yusei Kobayashi , Takahiro Ikeda , Masashi Yamakawa

{"title":"Effect of the interaction anisotropy of the nanoparticle surface on the glass transition temperature of polymer nanocomposites","authors":"Taisei Ueda , Yusei Kobayashi , Takahiro Ikeda , Masashi Yamakawa","doi":"10.1016/j.polymer.2025.128188","DOIUrl":"10.1016/j.polymer.2025.128188","url":null,"abstract":"<div><div>The glass transition temperature, <span><math><msub><mrow><mi>T</mi></mrow><mrow><mi>g</mi></mrow></msub></math></span>, is one of the most significant factors by which the system is characterized because most of the properties of polymer nanocomposites (PNCs) vary considerably below and above the <span><math><msub><mrow><mi>T</mi></mrow><mrow><mi>g</mi></mrow></msub></math></span> of PNCs. We performed molecular dynamics simulations on PNCs filled with diblock or triblock Janus nanoparticles (JNPs) to investigate the effect of the interaction anisotropy of the NP surface on <span><math><msub><mrow><mi>T</mi></mrow><mrow><mi>g</mi></mrow></msub></math></span> by comparing with the results of the case of homogeneous nanoparticles (HNPs) with the same averaged polymer-NP coupling strength over the NP surface. The results revealed that the <span><math><msub><mrow><mi>T</mi></mrow><mrow><mi>g</mi></mrow></msub></math></span> can be shifted to lower values by introducing anisotropy in the surface interactions, in contrast to NPs with isotropic interactions. Moreover, we investigated the contribution of diffusion coefficients of polymer to the <span><math><msub><mrow><mi>T</mi></mrow><mrow><mi>g</mi></mrow></msub></math></span>. Adding diblock JNPs (DJNPs) enhanced diffusion of polymers when compared with adding HNPs, thereby lowering the <span><math><msub><mrow><mi>T</mi></mrow><mrow><mi>g</mi></mrow></msub></math></span>. Comparing the diblock and triblock JNP (TJNP) cases, we found that the polymer diffusion of TJNP cases is slower than that of DJNP cases because the TJNPs can make indirect contact <span><math><mrow><mi>v</mi><mi>i</mi><mi>a</mi></mrow></math></span> the polymer chains around the entire NP surface.</div></div>","PeriodicalId":405,"journal":{"name":"Polymer","volume":"324 ","pages":"Article 128188"},"PeriodicalIF":4.1,"publicationDate":"2025-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143560896","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

A study on cure kinetics and time-temperature-transformation cure diagram of epoxy/cyanate ester co-curing system

IF 4.1 2区化学

Polymer Pub Date : 2025-03-04 DOI: 10.1016/j.polymer.2025.128230

Yajing Qiao , An Xing , Chenchen Gao , Peichen Yuan , Zhiqi He , Jianyong Lv , Shuang Li , Pengfei Xue , Songnan Niu , Xiaoyu Li

{"title":"A study on cure kinetics and time-temperature-transformation cure diagram of epoxy/cyanate ester co-curing system","authors":"Yajing Qiao , An Xing , Chenchen Gao , Peichen Yuan , Zhiqi He , Jianyong Lv , Shuang Li , Pengfei Xue , Songnan Niu , Xiaoyu Li","doi":"10.1016/j.polymer.2025.128230","DOIUrl":"10.1016/j.polymer.2025.128230","url":null,"abstract":"<div><div>Copolymerization of epoxy resin and cyanate ester combines the advantages of both epoxy thermosets and cyanate esters, taking important roles in the field of electronic packaging and aerospace applications. However, optimal cure control is essential to achieve outstanding performance, due to its complex reaction mechanism and step growth of network polymer. Although many groups investigated the cure behaviors of epoxy/cyanate ester co-curing system, those works are mainly focused on applying different models to obtain various curing kinetic parameters. Herein, in addition to obtaining curing kinetic parameters using Kissinger equation and Ozawa equation, diffusion factor was purposely introduced into Kamal model to successfully describe the whole cure process, including both kinetically controlled stage and diffusion controlled stage. Meanwhile, the applicability of DiBenedetto equation to <em>T</em><sub><em>g</em></sub> vs. conversion plots of epoxy/cyanate ester co-curing system was confirmed regardless of its complex reaction mechanism, and the one-to-one relationship between <em>T</em><sub><em>g</em></sub> and conversion of this co-curing system was observed. In addition, time-temperature-superposition kinetic was studied, and corresponding <em>T</em><sub><em>g</em></sub> ∼ ln<em>t</em> master curve was obtained. Moreover, time-temperature-transformation cure diagram, with vitrification curve and iso-conversion curves, was constructed for the first time in the case of epoxy/cyanate ester co-curing system.</div></div>","PeriodicalId":405,"journal":{"name":"Polymer","volume":"324 ","pages":"Article 128230"},"PeriodicalIF":4.1,"publicationDate":"2025-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143538933","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Architectural influence of polymer brush-modified tri-compartmental anisotropic particles in stabilizing pickering emulsion

IF 4.1 2区化学

Polymer Pub Date : 2025-03-04 DOI: 10.1016/j.polymer.2025.128222

Subhashree Subhasmita Pradhan , Ashank Upadhyay , Samiksha Shrivastava , Awaneesh Singh , Sampa Saha

{"title":"Architectural influence of polymer brush-modified tri-compartmental anisotropic particles in stabilizing pickering emulsion","authors":"Subhashree Subhasmita Pradhan , Ashank Upadhyay , Samiksha Shrivastava , Awaneesh Singh , Sampa Saha","doi":"10.1016/j.polymer.2025.128222","DOIUrl":"10.1016/j.polymer.2025.128222","url":null,"abstract":"<div><div>We aimed to create tri-compartmental polymeric particles (TPs), with selective areas conjugated with hydrophilic patches, to produce an array of amphiphilic particles with various architectures. Briefly, the electrohydrodynamic co-jetting technique (EHDC) was employed to produce 4 sets of TPs comprising PLA (polylactide) in one/two compartments and a blend of PLA and a macro-initiator at a ratio of 90/10 in other compartments (s). Upon grafting a hydrophilic polymer brush (poly(2-dimethyl amino ethyl methacrylate) (polyDMAEMA)) onto the surface of macroinitiator (10 wt%) containing compartment using Surface Initiated Atom Transfer Radical Polymerization (SIATRP), particles were expected to become amphiphilic. By locating the macroinitiator in various compartments (TBP 1–4), an array of amphiphilic particles with various architectures was created. This study allowed us to produce a repertoire of anisotropic particles with varying amphiphilicity for investigating their role as Pickering emulsion stabilizers beyond Janus geometry. The relative performance of the brush-modified TPs (TBPs) in stabilizing octanol/water-based emulsion was explained with the aid of their HLB balance, interfacial tension, location of the macroinitiator, and the macroinitiator content/grafting density. The particles having a maximum area of hydrophilic lobes confined to one hemisphere were found to prolong the emulsion stability for the maximum time (∼8 days), thus considered the most efficient one. In addition to polyDMAEMA, strongly hydrophilic poly(ethylene glycol methyl ether methacrylate) (polyEGMA) brushes were also grafted onto TPs to enhance their hydrophilicity, which ultimately yielded an emulsion with prolonged stability (∼11 days).</div></div>","PeriodicalId":405,"journal":{"name":"Polymer","volume":"324 ","pages":"Article 128222"},"PeriodicalIF":4.1,"publicationDate":"2025-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143538932","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

A polycaprolactone-based nanocarrier containing thioketal linkers and charge conversion capabilities for doxorubicin delivery

IF 4.1 2区化学

Polymer Pub Date : 2025-03-04 DOI: 10.1016/j.polymer.2025.128223

Trong-Nghia Le , Jacob Mathew , Yen Chen Shen , Luu Nguyen Ngoc Nguyet , Cheng-Kang Lee , N. Vijayakameswara Rao

{"title":"A polycaprolactone-based nanocarrier containing thioketal linkers and charge conversion capabilities for doxorubicin delivery","authors":"Trong-Nghia Le , Jacob Mathew , Yen Chen Shen , Luu Nguyen Ngoc Nguyet , Cheng-Kang Lee , N. Vijayakameswara Rao","doi":"10.1016/j.polymer.2025.128223","DOIUrl":"10.1016/j.polymer.2025.128223","url":null,"abstract":"<div><div>Reactive oxygen species (ROS) are found in higher concentrations near cancerous and inflammatory cells, making ROS-responsive nanocarriers a promising avenue for cancer drug delivery. In this research, we developed novel biodegradable nanoparticles (BnOH-(PCL-<em>co</em>-DMMCL)-TK-mPEG NPs) composed of poly (ethylene glycol)-block-poly caprolactone polymer. These nanoparticles incorporate a ROS-sensitive thioketal-linker and a pH-sensitive charge-conversional component to improve cellular uptake and facilitate drug release in the tumor microenvironment (TME). The pH-sensitive charge-conversional feature was achieved using an acid-labile <em>β</em>-carboxylic amide group. Under acidic TME conditions, the nanoparticles exhibited a swift transition from negative to positive surface charge, with in vitro studies confirming enhanced cellular internalization. Additionally, the thioketal ROS-responsive linkers in the nanoparticles preferentially broke down in the presence of 10 mM H<sub>2</sub>O<sub>2</sub> under mildly acidic conditions (pH 6.2), simulating the ROS environment of TME. This degradation was evidenced by rapid changes in nanoparticle size after 6 h. Doxorubicin hydrochloride (DOX) release rates increased significantly, reaching 72 % after 24 h in the presence of 10 mM H<sub>2</sub>O<sub>2</sub> at pH 7.4, and 82 % at pH 6.2 over the same period. MTT assays demonstrated the high biocompatibility of the synthesized copolymer. The DOX-loaded nanoparticles showed strong cell internalization capabilities and effective intracellular release of DOX.</div></div>","PeriodicalId":405,"journal":{"name":"Polymer","volume":"324 ","pages":"Article 128223"},"PeriodicalIF":4.1,"publicationDate":"2025-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143547038","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Strikingly enhancing environmental stress crack resistance of HDPE via a small fraction of a PE-based covalent adaptable network 通过一小部分聚乙烯共价适应性网络显著增强高密度聚乙烯的抗环境应力开裂性能

IF 4.1 2区化学

Polymer Pub Date : 2025-03-04 DOI: 10.1016/j.polymer.2025.128224

Wei Tian , Yongjun Zhu , Chengeng Wang , Jing Huang , Xuhui Zhang , Ting Li , Yang Wang , Weifu Dong

{"title":"Strikingly enhancing environmental stress crack resistance of HDPE via a small fraction of a PE-based covalent adaptable network","authors":"Wei Tian , Yongjun Zhu , Chengeng Wang , Jing Huang , Xuhui Zhang , Ting Li , Yang Wang , Weifu Dong","doi":"10.1016/j.polymer.2025.128224","DOIUrl":"10.1016/j.polymer.2025.128224","url":null,"abstract":"<div><div>Environmental stress cracking (ESC) is a critical and widespread failure mechanism in polymer materials, posing significant challenges for long-term durability and performance. In this work, we report an effective approach to enhance the environmental stress crack resistance (ESCR) of high-density polyethylene (HDPE) by incorporating a polyethylene-based covalent adaptable network (PE-CAN), Sur-ESO<sub>x</sub>, synthesized via the crosslinking of Surlyn resin (ethylene-methacrylic acid copolymers with zinc ions) with epoxidized soybean oil (ESO). Two preparation methods were explored, with the one-pot method showing superior interfacial adhesion and strengthened entanglements between HDPE and Sur-ESO<sub>x</sub>. The resulting blends demonstrated significantly improved ESCR, with F<sub>50</sub> values exceeding 290 h at 10 phr Sur-ESO<sub>4</sub>, compared to only 3 h for neat HDPE. Importantly, the dynamic network structure of Sur-ESO<sub>4</sub> preserved processing and mechanical properties with minimal losses. These findings provide valuable insights into enhancing polymer durability and broadening the applications of CANs.</div></div>","PeriodicalId":405,"journal":{"name":"Polymer","volume":"324 ","pages":"Article 128224"},"PeriodicalIF":4.1,"publicationDate":"2025-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143546977","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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