Polymers

摘要： 泰国Indorama Ventures公司于2022年2月22日宣布收购了UCY Polymers CZ(捷克共和国Plzen)85%的股份,后者是一家聚对苯二甲酸乙二醇酯(PET)回收公司。Indorama表示,收购完成后,到2025年,UCY将把捷克共和国、德国和中欧地区每年回收的PET塑料瓶总数增加到16亿瓶,并将在捷克共和国每年再回收约11.2亿瓶PET塑料瓶。

摘要： Polymers are huge compounds made up of numerous monomers(repeated subunits).They have similar macro and micro properties,as well as electrical transport qualities,semiconductive capabilities,and optical features.With the advent of conductive polyacetylene,conductive polymers have gotten a lot of interest.These conductors have a wide range of electrical conductivity,which may be produced by doping,while being mechanically flexible and having a high thermal stability.Polymers may be created using a variety of methods,including chemical and electrochemical polymerization.With advancement in material stability and greater property control,an increasing variety of new applications are now being investigated.

摘要： Interfacial solar-driven evaporation technique is an environmental friendly and cost-effective advanced approach for water purification using solar energy.Free energy sources are effectively utilized using the structural design of evaporators and functional materials.In this work,we have fabricated a solar-driven interfacial evaporation device with Banana Pseudo Stem(BPS)and a photothermal layer made up of PVA PDMS Carbon(PPC)is attached to it.High evaporation rate of 2.03 kg m^(−2) h^(−1) is achieved by the system under 1 sun illumination.Heat localization on interfacial surface,reflectance of photothermal layer,presence of micro-fluidic channels in BPS were studied using IR imaging,UV-DRS and SEM characterization techniques,respectively.Effective localization of interfacial temperature around 53°C and very low reflectance of photothermal layer substantiates high photothermal conversion efficiency of the device.The complete purification of water containing high concentration of Rhodamine-B dye using BPS is a novel and simple approach for water purification.This is an eco-friendly,cost-efficient novel approach in fabrication of interfacial solar-driven evaporation system with high evaporation rate for purification of water containing high concentration of organic dye.

摘要： 3D printing is nowadays used for many applications far beyond pure rapid prototyping.As tools to prepare custom-made objects which may be highly complex,different 3D printing techniques have emerged into areas of application where the mechanical,thermal,optical and other properties have to meet high requirements.Amongst them,applications for space,e.g.for microsatellites,make extreme demands regarding the stability under high temperatures.Nevertheless,polymeric 3D printed materials have several advantages for space application in comparison with metal objects.Here we thus investigate the impact of temperatures up to 85◦C and 185◦C,respectively,on typical 3D printing materials for fused deposition modeling or stereolithography(SLA)with inexpensive 3D printers.The materials are found to differ strongly in terms of mechanical properties and dimensional stability after the treatment at a higher temperature,with SLA resins and co-polyester showing the best dimensional stability,while acrylonitrile–butadiene–styrene and SLA resin after long UV post-treatment has the best mechanical properties.

摘要： A well understanding about protein adsorption into charged polymer brushes is of importance in the elucidation of mechanism and important phenomena(such as “chain delivery”effect) in protein adsorption on polymer-grafted ion exchange adsorbents. In this work, quartz crystal microbalance with dissipation(QCM-D) was introduced to in situ investigate lysozyme adsorption on QCM sensors grafted with poly(3-sulfopropyl methacrylate)(pSPM) via atom transfer radical polymerization. It was achieved by analyzing frequency(f) and energy dissipation(D) shift simultaneously on pSPM-grafted sensors. The result showed that an initial decrease in ΔD was typical of lysozyme adsorption on pSPM-grafted sensor and more significant with an increase of chain length and grafting density. It was attributed to significant water release in the hydration layer of protein and polymer chains in lysozyme adsorption into pSPM brushes.On pSPM-grafted sensors with long and dense chains, furthermore, lysozyme transitioned from monolayer to multilayer adsorption and the maximum adsorbed amount was obtained to be 374.0 ng·cmamong all pSPM-grafted sensors in this work. The results in D-f plot further revealed that lysozyme adsorption into pSPM brushes increased the rigidity of adsorbed layer and little structure adjustment of adsorbed lysozyme. It was unfavorable for “chain delivery” effect for facilitated transport of adsorbed protein. This work provided valuable insight into protein adsorption in pSPM brushes and outlined a feasible approach to increasing mass transport in polymer-grafted ion exchange adsorbents.

摘要： Smart membranes with tunable permeability and selectivity have drawn widespread attention because of their unique biomimetic characteristics.Constructed by incorporating various stimuli-responsive materials into membrane substrates,smart membranes could self-adjust their physical/chemical properties(such as pore size and surface properties)in response to environmental signals such as temperature,pH,light,magnetic field,electric field,redox and specific ions/molecules.Such smart membranes show great prospects in biomedical applications ranging from controlled drug release to bioseparation and tissue engineering.In this review,three controlled release models realized by different designed smart membranes are emphatically introduced,and then smart membranes for biological separation and controlled cell culture are introduced and discussed respectively.At last,the existing challenges of smart membranes for biomedical applications are briefly summarized,and future research topics are suggested.

摘要： Fenner Precision Polymers公司旗下的NinjaTek公司近日宣布在全球范围内推出其新的75A硬度热塑性弹性体(TPE)3D打印长丝Chinchilla™。该材料由工程级树脂和NinjaTek专有的挤出方法组成,具有前所未有的柔软性和易于打印的双重优势。这种新的3D打印TPE长丝适用于直接驱动和Bowden挤出打印机。

摘要： Thin-film flexible solar cells are lightweight and mechanically robust.Along with rapidly advancing battery technology,flexible solar panels are expected to create niche products that require lightweight,mechanical flexibility,and moldability into complex shapes,such as roof-panel for electric automobiles,foldable umbrellas,camping tents,etc.In this paper,we provide a comprehensive assessment of relevant materials suitable for making flexible solar cells.Substrate materials reviewed include metals,ceramics,glasses,and plastics.For active materials,we focus primarily on emerging new semiconductors including small organic donor/acceptor molecules,conjugated donor/acceptor polymers,and organometal halide perovskites.For electrode materials,transparent conducting oxides,thin metal films/nanowires,nanocarbons,and conducting polymers are reviewed.We also discuss the merits,weaknesses,and future perspectives of these materials for developing next-generation flexible photovoltaics.

摘要： 本发明公开了一种基于原位生长的Polymer‑COF‑MOF复合膜及其制备方法，该Polymer‑COF‑MOF复合膜具有层叠的多层膜结构，首先由COF配体和线性Polymer共聚形成聚合物共价有机骨架(Poly‑COF)，然后将聚合物共价有机骨架放置于金属中心离子前驱液中，加入带氨基的有机配体溶液后搅拌均匀，反应制得Polymer‑COF‑MOF复合膜；MOF膜层的形成过程中，该MOF膜层的金属中心离子通过与有机配体形成配位键，同时有机配体上的氨基与Poly‑COF膜层的羧基或者残存的醛基发生反应，实现MOF膜层在COF膜层上的原位生长；本发明提供的Polymer‑COF‑MOF多层复合膜中，Polymer、COF膜层之间通过共价键实现化学键合；MOF、COF膜层之间通过羧酸(或醛基)和氨基反应生成的酰胺键(或席夫碱)实现连接，结构稳定、机械强度更高。

摘要： 本发明提供了化合物DA‑I2959，结构如式(1)所示，聚合物DA‑Polymer，结构如式(2)所示，及所述化合物DA‑I2959、所述聚合物DA‑Polymer的制备方法。本发明还提供了一种所述的聚合物DA‑Polymer或者所述的制备方法得到的聚合物DA‑Polymer的使用方法。本发明进一步提供了一种油润滑材料。

摘要： 本发明公开了一种基于新型的Polymer‑COF‑rGO复合膜及其制备方法，首先由COF单体和线性Polymer制备含有聚合物的COF单体，然后将上述COF单体和另一种含有氨基的COF单体以及氧化石墨烯(GO)混合研磨，加入DMF和乙酸后加热反应，形成新的Polymer‑COF‑rGO复合膜。合成反应中两种COF单体形成COF材料，添加的氧化石墨烯(GO)在DMF溶液中原位还原，在加热条件下同时和COF材料中的氨基形成共价键连接在rGO和COF之间，实现rGO(还原氧化石墨烯)膜层在COF膜层上的原位生长。由于Polymer和COF膜层之间、COF和rGO膜层之间均是通过共价键实现连接，不仅有效将这两种类型的2D材料紧密结合在一起，而且还起到了“桥梁”的作用，改善COF光生电荷的分离以及光生电子向rGO的迁移。

摘要： 本发明公开了一种基于原位生长的Polymer‑COF‑MOF复合膜及其制备方法，该Polymer‑COF‑MOF复合膜具有层叠的多层膜结构，首先由COF配体和线性Polymer共聚形成聚合物共价有机骨架(Poly‑COF)，然后将聚合物共价有机骨架放置于金属中心离子前驱液中，加入带氨基的有机配体溶液后搅拌均匀，反应制得Polymer‑COF‑MOF复合膜；MOF膜层的形成过程中，该MOF膜层的金属中心离子通过与有机配体形成配位键，同时有机配体上的氨基与Poly‑COF膜层的羧基或者残存的醛基发生反应，实现MOF膜层在COF膜层上的原位生长；本发明提供的Polymer‑COF‑MOF多层复合膜中，Polymer、COF膜层之间通过共价键实现化学键合；MOF、COF膜层之间通过羧酸(或醛基)和氨基反应生成的酰胺键(或席夫碱)实现连接，结构稳定、机械强度更高。

摘要： 本发明提供了化合物DA‑I2959，结构如式(1)所示，聚合物DA‑Polymer，结构如式(2)所示，及所述化合物DA‑I2959、所述聚合物DA‑Polymer的制备方法。本发明还提供了一种所述的聚合物DA‑Polymer或者所述的制备方法得到的聚合物DA‑Polymer的使用方法。本发明进一步提供了一种油润滑材料。

摘要： 本发明涉及一种不锈钢毛细管和Polymer增敏结构的高频FBG加速度传感器及其使用方法，属于光电子测量技术领域。本发明包括聚四氟乙烯固定外壳、不锈钢毛细管、光纤Bragg光栅、导出光纤、弹性金属薄片；所述不锈钢毛细管外侧两边固定于聚四氟乙烯固定外壳空心圆筒中，把光纤Bragg光栅预拉伸后粘贴在弹性金属薄片上，粘贴有光纤Bragg光栅的弹性金属薄片放入不锈钢毛细管中央，导出光纤从不锈钢毛细管两边引出。本发明能够在较高的振动频率的基础上实现高灵敏度测量；本设计能够实现微小直径封装，可以适用于安装空间较小的测量对象中进行振动监测；通过采用光纤Bragg光栅，具有较强的抗电磁干扰能力和耐腐蚀能力适用于对变压器的长期监测；结构简单，便于操作。

摘要： 本实用新型公开了一种多功能新能源汽车储能电池Polymer电芯支架，包括支架本体，所述支架本体上设有与Polymer电芯外形结构相匹配的电芯深浅放置槽；所述支架本体的左右两侧分别设有定位孔柱；所述支架本体的前后两侧分别设有一个以上的喇叭散热槽；所述电芯深浅放置槽上设有预留膨胀槽孔。本实用新型结构简单，功能易行，增强Polymer电芯堆叠牢固，安全可靠整体结构。

摘要： 本实用新型涉及一种不锈钢毛细管和Polymer增敏结构的高频FBG加速度传感器，属于光电子测量技术领域。本实用新型包括聚四氟乙烯固定外壳、不锈钢毛细管、光纤Bragg光栅、导出光纤、弹性金属薄片；所述不锈钢毛细管外侧两边固定于聚四氟乙烯固定外壳空心圆筒中，把光纤Bragg光栅预拉伸后粘贴在弹性金属薄片上，粘贴有光纤Bragg光栅的弹性金属薄片放入不锈钢毛细管中央，导出光纤从不锈钢毛细管两边引出。本实用新型能够在较高的振动频率的基础上实现高灵敏度测量；本设计能够实现微小直径封装，可以适用于安装空间较小的测量对象中进行振动监测；通过采用光纤Bragg光栅，具有较强的抗电磁干扰能力和耐腐蚀能力适用于对变压器的长期监测；结构简单，便于操作。