Chinese Journal of Polymer Science最新文献_第2页

Photocurrent in the Polyfluorene Copolymer/PTCDI Heterojunction Enhanced by Reabsorption of Fluorescence Emission

IF 4.1 2区化学

Chinese Journal of Polymer Science Pub Date : 2024-10-29 DOI: 10.1007/s10118-024-3231-4

Dmitriy A. Lypenko, Alexey E. Aleksandrov, Artem V. Dmitriev, Anton A. Yakimanskiy, Ilya E. Kolesnikov, Tatiana G. Chulkova, Alexander V. Yakimansky, Alexey R. Tameev

{"title":"Photocurrent in the Polyfluorene Copolymer/PTCDI Heterojunction Enhanced by Reabsorption of Fluorescence Emission","authors":"Dmitriy A. Lypenko, Alexey E. Aleksandrov, Artem V. Dmitriev, Anton A. Yakimanskiy, Ilya E. Kolesnikov, Tatiana G. Chulkova, Alexander V. Yakimansky, Alexey R. Tameev","doi":"10.1007/s10118-024-3231-4","DOIUrl":"10.1007/s10118-024-3231-4","url":null,"abstract":"<div>Copolyfluorenes are of great interest due to their ability to form thin films with tunable optical and electrical properties. In this paper, copolymers of polyfluorene with electron withdrawing dicyanostilbene and dicyanophenanthrene moieties were synthesized; their thin films were characterized by electron spectroscopy, cyclic voltammetry, electrical, and photoelectrical measurements. The mobility of charge carriers in the copolymers was measured for the first time, with the acceptor components providing balanced electron and hole mobilities of the order of 10−6 cm2·V−1·s−1. Photodetectors based on the copolymer/PTCDI heterojunction exhibited the photoresponse band extended into the green region due to the absorption of PTCDI and an increased photocurrent in the UV-blue absorption band of the copolymer, which is related to the absorption of photoluminescent emission of the copolymers in PTCDI. The presented approach to improving the performance of a polymer-based photodetector is promising in organic optoelectronics.</div>","PeriodicalId":517,"journal":{"name":"Chinese Journal of Polymer Science","volume":"42 12","pages":"1941 - 1947"},"PeriodicalIF":4.1,"publicationDate":"2024-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142778507","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

Droplet Bridging Effect in Polymer/Polymer/Filler Ternary Composites

IF 4.1 2区化学

Chinese Journal of Polymer Science Pub Date : 2024-10-21 DOI: 10.1007/s10118-024-3212-7

Feng-Yi Hou, Li Peng, Fei Yu, Xian-Bo Huang, Wei Yu

{"title":"Droplet Bridging Effect in Polymer/Polymer/Filler Ternary Composites","authors":"Feng-Yi Hou, Li Peng, Fei Yu, Xian-Bo Huang, Wei Yu","doi":"10.1007/s10118-024-3212-7","DOIUrl":"10.1007/s10118-024-3212-7","url":null,"abstract":"<div>In particle-filled polymer composites with selective distributions of fillers in one phase, much attention has been focused on the “volume exclusion effect” in reducing the percolation threshold of filler, while the role of dispersed polymer phase acting as bridges of fillers in the particle network has largely been ignored. Herein, we studied industrially important ternary composites, polypropylene (PP)/ethylene-octene copolymer (a polyolefin elastomer, POE)/talc systems, and adopted rheology to reveal the bridging behavior of POE droplets in the network of talc particles. It is found that talc fillers concentrate in the PP phase using the “blend first” protocol, while more talc particles are located at the interface of PP and POE phases using the “filler first” protocol. Changing the POE viscosity and talc size can affect the migration of talc from the POE phase to the PP phase in the “filler first” protocol. The linear rheology behavior indicates that besides the “volume exclusion effect”, the talc-POE hybrid network can further contribute to the reinforcement effect. Meanwhile, the POE droplet bridging structure can facilitate the rebuilding of the hybrid network after large amplitude oscillatory shear, in contrast to the un-recoverable structures in the PP/talc binary composites. The correlation between rheology and selective distribution of fillers in ternary composites may provide practical guidance for processing and designing advanced polymer composites with controlled selective location of fillers.</div>","PeriodicalId":517,"journal":{"name":"Chinese Journal of Polymer Science","volume":"42 12","pages":"1966 - 1975"},"PeriodicalIF":4.1,"publicationDate":"2024-10-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142778550","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

Elongational Flow-induced Crystallization of Poly(L-lactic acid) Telechelic Ionomers

IF 4.1 2区化学

Chinese Journal of Polymer Science Pub Date : 2024-10-21 DOI: 10.1007/s10118-024-3218-1

Fan Liu, Shao-Yong Huang, Jian Tang, Quan Chen

引用次数: 0

Data-Driven Exploration of Polymer Processing Effects on the Mechanical Properties in Carbon Black-Reinforced Rubber Composites

IF 4.1 2区化学

Chinese Journal of Polymer Science Pub Date : 2024-10-21 DOI: 10.1007/s10118-024-3216-3

Zi-Long Wan, Wan-Chen Zhao, Hao-Ke Qiu, Shu-Shuai Zhou, Si-Yuan Chen, Cui-Liu Fu, Xue-Yang Feng, Li-Jia Pan, Ke Wang, Tian-Cheng He, Yu-Ge Wang, Zhao-Yan Sun

{"title":"Data-Driven Exploration of Polymer Processing Effects on the Mechanical Properties in Carbon Black-Reinforced Rubber Composites","authors":"Zi-Long Wan, Wan-Chen Zhao, Hao-Ke Qiu, Shu-Shuai Zhou, Si-Yuan Chen, Cui-Liu Fu, Xue-Yang Feng, Li-Jia Pan, Ke Wang, Tian-Cheng He, Yu-Ge Wang, Zhao-Yan Sun","doi":"10.1007/s10118-024-3216-3","DOIUrl":"10.1007/s10118-024-3216-3","url":null,"abstract":"<div>The performance and corresponding applications of polymer nanocomposites are highly dominated by the choice of base material, type of fillers, and the processing ways. Carbon black-filled rubber composites (CRC) exemplify this, playing a crucial role in various industries. However, due to the complex interplay between these factors and the resulting properties, a simple yet accurate model to predict the mechanical properties of CRC, considering different rubbers, fillers, and processing techniques, is highly desired. This study aims to predict the dispersion of fillers in CRC and forecast the resultant mechanical properties of CRC by leveraging machine learning. We selected various rubbers and carbon black fillers, conducted mixing and vulcanizing, and subsequently measured filler dispersion and tensile performance. Based on 215 experimental data points, we evaluated the performance of different machine learning models. Our findings indicate that the manually designed deep neural network (DNN) models achieved superior results, exhibiting the highest coefficient of determination (R2) values (>0.95). Shapley additive explanations (SHAP) analysis of the DNN models revealed the intricate relationship between the properties of CRC and process parameters. Moreover, based on the robust predictive capabilities of the DNN models, we can recommend or optimize CRC fabrication process. This work provides valuable insights for employing machine learning in predicting polymer composite material properties and optimizing the fabrication of high-performance CRC.</div>","PeriodicalId":517,"journal":{"name":"Chinese Journal of Polymer Science","volume":"42 12","pages":"2038 - 2047"},"PeriodicalIF":4.1,"publicationDate":"2024-10-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142778286","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

Scalable and High-Quality Monolayer Graphene Transfer onto Polymer Membranes Assisted by Camphor

IF 4.1 2区化学

Chinese Journal of Polymer Science Pub Date : 2024-10-21 DOI: 10.1007/s10118-024-3207-4

Jun-Kan Yue, Jing Liang, Qiao-Yu Tan, Man Chen, Jing-Wen Li, Qing Guo, Run-Lai Li, Qiang Fu

{"title":"Scalable and High-Quality Monolayer Graphene Transfer onto Polymer Membranes Assisted by Camphor","authors":"Jun-Kan Yue, Jing Liang, Qiao-Yu Tan, Man Chen, Jing-Wen Li, Qing Guo, Run-Lai Li, Qiang Fu","doi":"10.1007/s10118-024-3207-4","DOIUrl":"10.1007/s10118-024-3207-4","url":null,"abstract":"<div>The quest for scalable integration of monolayer graphene into functional composites confronts the bottleneck of high-fidelity transfer onto substrates, crucial for unlocking graphene’s full potential in advanced applications. Addressing this, our research introduces the camphor-assisted transfer (CAT) method, a novel approach that surmounts common issues of residue and structural deformation endemic to existing techniques. Grounded in the sublimation dynamics of camphor, the CAT method achieves a clean, contiguous transfer of centimeter-scale monolayer graphene onto an array of polymer films, including ultra-thin polyethylene films. The resultant ultrathin graphene-polyethylene (gPE) films, characterized by their exceptional transparency and conductivity, reveal the CAT method’s unique ability to preserve the pristine quality of graphene, underscoring its practicality for preparing flexible transparent electrodes by monolayer graphene. In-depth mechanism investigation into the camphor sublimation during CAT has led to a pivotal realization: the porosity of the target polymer substrate is a determinant in achieving high-quality graphene transfer. Ensuring that camphor sublimates initially from the polymer side is crucial to prevent the formation of wrinkles or delamination of graphene. By extensive examination of CAT on a spectrum of commonly used polymer films, including PE, PP, PTFE, PI and PET, we have confirmed this important conclusion. This discovery offers crucial guidance for fabricating monolayer graphene-polymer composite films using methods akin to CAT, underscoring the significance of substrate selection in the transfer process.</div>","PeriodicalId":517,"journal":{"name":"Chinese Journal of Polymer Science","volume":"42 12","pages":"1986 - 2001"},"PeriodicalIF":4.1,"publicationDate":"2024-10-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142778285","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

Tensile-WAXD Apparatus: An Improved and Accurate System for the In situ Study of Extension-induced Segmental Orientation in Highly Stretched Elastomer

IF 4.1 2区化学

Chinese Journal of Polymer Science Pub Date : 2024-10-10 DOI: 10.1007/s10118-024-3201-x

Xiang Shi

引用次数: 0

Chemical Synthesis of Globo H and Mannobiose Glycopolymers and their Immunological Stimulation Globo H 和甘露聚糖的化学合成及其免疫刺激作用

IF 4.1 2区化学

Chinese Journal of Polymer Science Pub Date : 2024-10-10 DOI: 10.1007/s10118-024-3209-2

Zhi Zhang, Ce-Ce Xue, Ying-Le Feng, Guo-Song Chen

引用次数: 0

Doping Effect of Poly(vinylidene fluoride) on Carbon Nanofibers Deduced by Thermoelectric Analysis of Their Melt Mixed Films 通过熔融混合薄膜的热电分析推测聚偏二氟乙烯对碳纳米纤维的掺杂效应

IF 4.1 2区化学

Chinese Journal of Polymer Science Pub Date : 2024-09-27 DOI: 10.1007/s10118-024-3200-y

A. J. Paleo, V. M. Serrato, J. M. Mánuel, O. Toledano, E. Muñoz, M. Melle-Franco, B. Krause, P. Pötschke, K. Lozano

{"title":"Doping Effect of Poly(vinylidene fluoride) on Carbon Nanofibers Deduced by Thermoelectric Analysis of Their Melt Mixed Films","authors":"A. J. Paleo, V. M. Serrato, J. M. Mánuel, O. Toledano, E. Muñoz, M. Melle-Franco, B. Krause, P. Pötschke, K. Lozano","doi":"10.1007/s10118-024-3200-y","DOIUrl":"10.1007/s10118-024-3200-y","url":null,"abstract":"<div>The effect of temperature on the electrical conductivity (σ) and Seebeck coefficient (S) of n-type vapor grown carbon nanofibers (CNFs) and poly(vinylidene fluoride) (PVDF) melt-mixed with 15 wt% of those CNFs is analyzed. At 40 °C, the CNFs show stable n-type character (S=−4.8 µV·K−1) with an σ of ca.165 S·m−1, while the PVDF/CNF composite film shows an σ of ca. 9 S·m−1 and near-zero S (S=−0.5 µV·K−1). This experimental reduction in S is studied by the density functional tight binding (DFTB) method revealing a contact electron transfer from the CNFs to the PVDF in the interface. Moreover, in the temperature range from 40 °C to 100 °C, the σ(T) of the CNFs and PVDF/CNF film, successfully described by the 3D variable range hopping (VRH) model, is explained as consequence of a thermally activated backscattering mechanism. On the contrary, the S(T) from 40 °C to 100 °C of the PVDF/CNF film, which satisfactorily matches the model proposed for some multi-walled carbon nanotube (MWCNT) doped mats; however, it does not follow the increase in S(T) found for CNFs. All these findings are presented with the aim of discerning the role of these n-type vapor grown carbon nanofibers on the σ and S of their melt-mixed polymer composites.</div>","PeriodicalId":517,"journal":{"name":"Chinese Journal of Polymer Science","volume":"42 11","pages":"1802 - 1810"},"PeriodicalIF":4.1,"publicationDate":"2024-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142600701","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

Fabrication of Modified Fibrous Filters by Electrospinning and Investigating Their Application as Improved Face Masks 用电纺法制造改性纤维过滤器并研究其在改良面罩中的应用

IF 4.1 2区化学

Chinese Journal of Polymer Science Pub Date : 2024-09-27 DOI: 10.1007/s10118-024-3205-6

Mehdi Mahmoudian, Fatemeh Zanbili

{"title":"Fabrication of Modified Fibrous Filters by Electrospinning and Investigating Their Application as Improved Face Masks","authors":"Mehdi Mahmoudian, Fatemeh Zanbili","doi":"10.1007/s10118-024-3205-6","DOIUrl":"10.1007/s10118-024-3205-6","url":null,"abstract":"<div>Owing to the significant increase in air pollutants and the spread of infectious diseases, it seems that the use of face masks will become an essential item in human societies. Therefore, there is a need to conduct more research to develop novel types of respirators utilizing up-to-date science such as nanotechnology. In this study, we fabricated a nanocomposite fibrous filter containing modified graphene oxide (GO) and zinc oxide (ZnO) nanoparticles. This layer was used as an active filter for absorbing and removing air pollutants, such as suspended submicron particles (below 2.5 microns) and CO2, NO2, and SO2 gases. The synthesized nanostructures and fibrous filters were characterized by different analysis (FTIR, XRD, TGA, and FESEM), and the performance of the filters was surveyed by tests such as pressure drop, CO2, NO2, SO2 gas rejection, and particulate removal. The results showed that the stabilization of the modified GO and ZnO nanostructures on the fibrous filter improved the effectiveness of this filter as a mask for removing toxic particles and gases, and the filter containing nanoparticles had the best performance.</div>","PeriodicalId":517,"journal":{"name":"Chinese Journal of Polymer Science","volume":"42 11","pages":"1738 - 1748"},"PeriodicalIF":4.1,"publicationDate":"2024-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142600714","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

Spiropyran-Containing Reusable and Wearable All-in-One Ultraviolet Monitoring and Shielding Textiles for Sun Protection

IF 4.1 2区化学

Chinese Journal of Polymer Science Pub Date : 2024-09-27 DOI: 10.1007/s10118-024-3188-3

Zhen Wu, Kai-Feng Liao, Le-Ping Xiao, Shi-Jie Zhong, Min Gong, Guo-Jie Wang

{"title":"Spiropyran-Containing Reusable and Wearable All-in-One Ultraviolet Monitoring and Shielding Textiles for Sun Protection","authors":"Zhen Wu, Kai-Feng Liao, Le-Ping Xiao, Shi-Jie Zhong, Min Gong, Guo-Jie Wang","doi":"10.1007/s10118-024-3188-3","DOIUrl":"10.1007/s10118-024-3188-3","url":null,"abstract":"<div>Moderate ultraviolet (UV) radiation from sunlight is essential for human health, but overexposure to UV rays can cause serious adverse effects. It is important to detect UV radiation from sunlight in time to prevent damage from excessive exposure. Here, a ready-to-use, easy-to-interpret, inexpensive, reusable, and wearable all-in-one UV monitoring and shielding sensor SP-TPE@PU textile has been developed. The SP-TPE@PU textiles are constructed by photochromic molecule SP-TPE and commercial polymer polyurethane (PU) through electrospinning. The SP-TPE molecule acts as the sensor component, and PU contributes to high flexibility. The SP-TPE@PU textiles show remarkable durability (against repeated twisting, curling, bending deformations, and water immersion) and good permeability, making them durable and breathable wearable materials. When exposed to sunlight, the SP-TPE@PU textiles rapidly exhibit significant color changes due to the efficient isomerization of SP-TPE, serving as an early warning and monitoring of UV radiation. In addition, the SP-TPE@PU textiles can revert to the initial state with visible light irradiation for reuse. Furthermore, the SP-TPE@PU textiles possess excellent UV shielding ability, contributing to human body protection. Simple and easy operation, significant and reversible color changes, good breathability and mechanical properties make SP-TPE@PU textiles reusable and wearable all-in-one UV monitoring and shielding sensors.</div>","PeriodicalId":517,"journal":{"name":"Chinese Journal of Polymer Science","volume":"42 12","pages":"1933 - 1940"},"PeriodicalIF":4.1,"publicationDate":"2024-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142778442","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