JOURNAL OF POLYMER SCIENCE
·
2024
·
IF 3.9
Xin Luo,Zhuqing Wang,Mengxia Yan,Jianhui Xin,Yongqi Yang,Longpo Zheng,Haijun Zhang
CO 2 -responsive based separation membranes are attractive in the field of membrane separation, not only for their ability to modulate the pore size of the membrane in response to CO 2 stimulation, but also for their ability to facilitate the removal of contaminants from the membrane surface. However, the introduction of CO 2 -responsive polymers by simple blending often results in membranes that are not responsive enough to last. In this study, we synthesized a hooked triblock copolymer and used it as an additive to prepare CO 2 -responsive PVDF membranes. The modified membrane combines the advantages of the PVDF material with the CO 2 response of the triblock copolymer. It not only has good CO 2 responsiveness, but also removes organic contaminants from the membrane surface well. The water flux of the hybrid membranes is 4 to 11 times higher than that of pure PVDF membranes, indicating that the triblock copolymer also has some porogenic ability. Surprisingly, the static contact angle on the membrane surface increased from 67° to 86° with the increase of the triblock copolymer content in the PVDF membrane. This suggests that modified PVDF membranes have some potential in the field of switchable oil–water separation. Graphical
研究领域:
膜科学
·
材料科学
·
环境工程
✓ 已验证
产品关联
DOI
高影响因子
Nanomaterials
·
2023
·Vol. 13
·期 6
·1085
·
IF 5.3
Qingchao Zhou,Zhongyi Shang
The commercial application of colloidal semiconductor nanocrystals has been realized owing to the development of composite film technology. Here, we demonstrated the fabrication of green and red emissive CuInS2nanocrystals embedded polymer composite films of equal thickness by using a precise solution casting method. The impacts of polymer molecular weight on the dispersibility of CuInS2nanocrystals were then systematically studied through evaluating the decrease in transmittance and red shift of emission wavelength. The composite films made from PMMA of small molecular weights exhibited higher transmittance. Applications of these green and red emissive composite films as color converters in remote-type light-emitting devices were further demonstrated.Keywords:CuInS2nanocrystals;PMMA;composite films;molecule weights;white LEDs
研究领域:
材料科学
·
光学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF POLYMER RESEARCH
·
2015
·Vol. 22
·期 12
·1-8
·
IF 1.92
Zhao Minjian,Fu Zhifeng,Shi Yan,Yang Wantai
Poly(methyl methacrylate)- b -poly( tert -butyl acrylate) (PMMA- b -P t BA) block copolymers were prepared based on the new mechanism of 1,1-diphenylethylene (DPE) controlled radical polymerization in homogeneous systems. Firstly, monomer methyl methacrylate (MMA), initiator 2,2-azobisisoheptonitrile (ABVN) and a control agent DPE were solution polymerized to form DPE-containing PMMA precursor. Then the second monomer tert -butyl acrylate ( t BA) was simply heated in the presence of DPE-containing PMMA precursor used as macroinitiator, and block copolymers were synthesized successfully. The effects of polymerization temperature and solvent on molecular weight and molecular weight distribution of polymers throughout the polymerization were investigated. DPE-containing poly(styrene) precursor could not induce block polymerization.
研究领域:
高分子科学
·
材料化学
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产品关联
DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2016
·Vol. 134
·期 12
·
IF 1.866
Qing Zhang,Wan-Xia Huang,Gan-Ji Zhong
Poly(methyl methacrylate) grafted silica (SiO 2 -g-PMMA) was synthesized via in situ suspension polymerization. To achieve better uniform dispersion, hexadecyltrimethylammonium bromide (CTAB) was introduced into xylene to manipulate SiO 2 aggregation. SiO 2 -g-PMMA or SiO 2 was incorporated into PMMA matrix by in situ polymerization to prepare PMMA-based nanocomposites. The effect of CTAB amount, in the range 0–35 wt %, on the modification was evaluated by DLS, TGA, and FTIR. Furthermore, morphology, optical, mechanical, and thermal properties of PMMA nanocomposites was characterized by SEM, UV–vis, DMA, and TGA. Owing to surface functionalization, SiO 2 -g-PMMA exhibited far more excellent compatibility and dispersion in matrix compared with SiO 2 . Surface hardness and thermal properties of nanocomposites were enhanced significantly under the premise in high transparency. It is expected that transparent nanocomposites with promising scratch-resistance could have wide applications, such as airplane shielding window and daily furniture. © 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017 , 134 , 44612.
研究领域:
材料科学
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聚合物化学
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产品关联
DOI
高影响因子
SOLAR ENERGY MATERIALS AND SOLAR CELLS
·
2025
·
IF 6.3
Tingting Chen,Fangyuan Zhao,Likun Wang,Sainan Ma,Guohua Shi,Qiying Liu,Yong Liu,Gaorong Han
To address the issues of the gel polymer electrolytes caused by solvents, like Propylene Carbonate (pc) and Ethylene Carbonate (ec), regarding cycling stability and safety, we prepared solvent-free PMMA-based solid polymer electrolytes using succinonitrile as a plasticizer (SN-PMMA) through the blade coating method. The mechanism of SN additives on dissociation of LiClO 4 and electrochemical properties was characterized using Fourier transform infrared spectroscopy, electrochemical impedance spectroscopy, and other structural investigation methods. The results indicated that SN is distributed uniformly in the PMMA matrix with high additive concentrations, and the nitrile group, which possesses strong polarity, effectively promoted the dissociation of lithium salt. The solvent-free SN-PMMA exhibits excellent ionic conductivity of 0.58 mS cm -1 and good thermal stability. The solid Electrochromic devices (ECDs) prepared with SN-PMMA and WO 3 via thermal laminating process maintain 90.8 % modulation amplitude after 500 cycles, as well as good electrochromic performance, where the optical modulation amplitude is 62.1 % at λ = 633 nm, the coloring efficiency is 53.77 cm 2 C -1 , and the response time is 23.8 s/38.1 s for bleaching/coloration, respectively. These findings confirm the feasibility of using SN as a substitute for traditional solvents and provide a new pathway for developing solid-state polymer electrolytes with enhanced safety and superior electrochemical performance.
研究领域:
材料科学
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电化学
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产品关联
DOI
高影响因子
RSC Advances
·
2016
·Vol. 6
·期 63
·58511-58515
·
IF 3.289
Xiaomin Zhu,Shenping Zhang,Lihuo Zhang,Honglai Liu,Jun Hu
In situ interfacial growth of nanoparticles induced by the Pickering emulsion is a novel and convenient method for preparing hybrids/composites with specific tasks. For the first time, magnetic PMMA@Fe3O4/Cu3(BTC)2 hollow microspheres were produced by one-pot Pickering emulsion using Fe3O4 nanoparticle (NP) stabilizer. The Fe3O4 Pickering emulsion provided a large oil/water interface area for the in situ growth of Cu3(BTC)2 nanocrystals and further interfacial polymerization of polymethyl methacrylate (PMMA). The hollow hybrid microspheres showed synergetic multi-functions, including the magnetic separation property caused by Fe3O4 NPs, the reverse thermal expansion by PMMA, and the adsorption enhanced permeation by porous Cu3(BTC)2 NPs. When it was used as the drug carrier for ibuprofen, the good loading capacity and the controllable release duration confirmed its good properties. Moreover, all the realized synergetic advantages further reveled the potential promising applications of the interfacial synthesis by Pickering emulsion method.
研究领域:
材料科学
·
药剂学
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纳米技术
✓ 已验证
产品关联
DOI
高影响因子
POLYMER
·
2024
·
IF 4.1
Jinqi Chen,Cong Luo,Yanhua Niu,Guangxian Li
Gel polymer electrolyte (GPE) is one of the promising candidates to overcome the defects of liquid and solid electrolyte for lithium metal batteries (LMBs). The obstacle for the practical application of GPEs lies in achieving a balance between ion transport, mechanical properties and interface stability. In this work, a star shaped polymer matrix polyhedral oligomeric silsesquioxane-polymethyl methacrylate (POSS-PMMA) is successfully synthesized with POSS as the core via atom transfer radical polymerization (ATRP) method. 1-ethyl-3-methylimidazole bis(trifluoromethanesulfon)imide ([EMIM][TFSI]) and bistrifluoromethanesulfonimide lithium salt (LiTFSI) are blended with the matrix to increase ionic conductivity. Attributed to the star structure and the lithium ion migration channel provided by POSS, the synthesized GPE possesses excellent balanced mechanical and electrochemical properties. To further stabilize the Li/GPE interface, a polymer and plastic crystalline electrolyte (PPCE) is coated as interface modification layer on both sides of GPE. Benefitting from the design, the synthesized GPE reaches a highly stable Li striping/plating cycling for 1000 h at 0.1 mA cm −2 with ionic conductivity of 3.5 × 10 −4 S cm −1 , Li + transference number of 0.35, and electrochemical stability window of 4.9 V. Furthermore, the Li||POSS-PMMA-PPCE||LiFePO 4 (LFP) full cell shows a high capacity retention of 99.5 % after 100 cycles at 0.2 C under room temperature (RT), and the high voltage Li||POSS-PMMA-PPCE||LiNi 1-x-y MnxCo y O 2 (NCM811) cell shows a high capacity retention of 88.3 % after 50 cycles at 0.1 C under RT. This work opens up a new frontier to stabilize the Li/GPE interface and enables safe operation of room temperature lithium metal batteries.
研究领域:
材料科学
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电化学
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产品关联
DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2024
·Vol. 141
·期 28
·e55626
·
IF 2.7
Xiao Li,ChongXiao Yuan,Guoqi Gao,Hengqing Zhou,Nannan Zhang,Xinyue Yang,Xiaofang Liu,Huajun Sun
The demand for self-powered sensing technology and energy harvesting system necessitates high-performance and flexible piezoelectric materials. This paper presents a novel approach utilizing coaxial electrospinning to fabricate all-organic PVDF/PMMA piezoelectric fiber films with a shell–core structure. The resulting fiber films, cut into 2 × 2 cm 2 square pieces and hot-pressed every three pieces, demonstrate enhanced piezoelectric properties while retaining high flexibility. The interaction between the CO bonds in the PMMA polymer and the CH 2 in PVDF promotes the arrangement of F atoms in PVDF, enhancing the content of the piezoelectric active phase. Additionally, the coaxial electrospinning process fosters vertically oriented hydrogen bonds between PVDF and PMMA, augmenting cross-linking and improving mechanical properties. Notably, when the PVDF to PMMA layer volume ratio is 5:1, the piezoelectric coefficient (| d 33 |) of the composite fiber film exhibits a significant 60% increase from 10 pC N −1 in neat PVDF to 16 pC N −1 . This research holds substantial promise for applications in self-powered sensing and energy harvesting piezoelectric materials.
研究领域:
材料科学
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能源技术
·
传感器技术
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产品关联
DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2024
·Vol. 141
·期 31
·e55738
·
IF 2.7
Liangyong He,Yuqing Yang,Bin Yang,Weiqiang Hu,Zhengzhi Zheng,Tianyu Lu,Haijia He,Jiasheng Qian,Yaoyang Chen,Weiguo Zhang,Yuchao Ke
In recent years, optical diffusion film materials with high transmittance and high haze have been widely reported, while there is relatively rare research on their functionalization and practical application especially in real scenario. In this work, optical diffusion films using polymethyl methacrylate (PMMA)@TiO 2 @SiO 2 (P@T@S) composite microspheres were fabricated, which exhibited sufficiently high light transmittance and haze. The binding mode of PMMA microspheres and nanoparticles suggested that PMMA microspheres with a positive surface potential combined with nanoparticles with a negative surface potential through electrostatic attraction to achieve mutual binding. The prepared P@T@S composite microspheres showed better heat and swelling resistance than those of PMMA microspheres. The P@T@S diffusion film, whose excellent light diffusion effect was clearly demonstrated, exhibited the best optical performance among all optical diffusion films prepared. After passing through the P@T@S diffusion film, the laser light was not only uniform but also bright. The findings from this work can provide some insight into further research on optical diffusion films applied in optoelectronic device areas.
研究领域:
材料科学
·
光学工程
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产品关联
DOI
高影响因子
Small
·
2025
·
IF 12.1
Cheng-Xun Guo,Jing-Hua Chen,Zi-Lin He,Jun-Hua Wei,Dai-Bin Kuang
Methylammonium lead bromide perovskite (MAPbBr 3 ) quantum dots (QDs) have emerged as promising candidates for next-generation optoelectronic applications owing to their exceptional photoluminescent properties. However, their practical applications face significant challenges due to inherent instability issues. Herein, a solvent-induced in situ crystallization method is presented to encapsulate MAPbBr 3 QDs within a crosslinked (cl-) polymethyl methacrylate (PMMA) network. This innovative approach eliminates environmental concerns associated with traditional solvent evaporation methods while enabling uniform dispersion and stabilization of perovskite QDs within the crosslinked polymer matrix. The effects of preparation conditions are systematically investigated on the optical performance of the composite materials. Notably, UV irradiation is found to significantly enhance the luminescent performance. The optimized MAPbBr 3 @cl-PMMA exhibits outstanding optoelectronic performance, featuring a narrow emission profile (full width at half maximum: 24.6 nm), high optical transmittance (91%), and an impressive photoluminescence quantum yield of 98.3%. Benefiting from the protective crosslinked polymer matrix, the composite demonstrates exceptional stability. Furthermore, by integrating MAPbBr 3 @cl-PMMA film with commercial K 2 SiF 6 :Mn 4+ (KSF) red phosphor, a liquid crystal display (LCD) backlight device achieving a wide color gamut of 122.7% National Television System Committee (NTSC) 1953 standard is fabricated. This environmentally friendly and scalable synthesis method offers a promising pathway for large-area manufacturing and practical optoelectronic applications.
研究领域:
材料科学
·
光学工程
·
高分子化学
·
纳米技术
·
显示技术
·
光电子学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
APPLIED SURFACE SCIENCE
·
2021
·
IF 6.707
Huimin Zhao,Xiaoqiang Liu,Zhenzhen Chi,Shuyuan Chen,Shaoxiang Li,Ziyang Guo,Lei Wang
Lithium–Oxygen (Li–O 2 ) batteries have great potential for promising next generation battery, owing to their high theoretical energy density. However, this system still faces many problems such as poor cycling performance and low coulombic efficiency, which mainly stems from the parasitic side reactions on cathode, the decomposition of electrolyte and the corrosion of Li anode. Herein, a novel gel polymer electrolyte (GPE) containing the polymethyl methacrylate (PMMA) with high stability towards the superoxide molecules and ionic liquid (IL) with the non-volatility (PMMA/IL-GPE) is designed by ultra violet (UV) treatment. PMMA/IL-GPE not only possesses the excellent ion conductivity (0.92 mS cm −1 ), the wide voltage window (not be oxidized until > 4.7 V) and superior leakproof property, but also effectively protects Li anode from O 2 -attacking. Moreover, we have further applied electroplating strategy to synthesize the binder-free Ru-coating N, P co-doped cathode (Ru@NPC), which greatly reduce the side reaction of cathode and reduce the charging overpotential. Hence, the Ru@NPC based Li–O 2 batteries using PMMA/IL-GPE show effectively improved discharge capacity (32793.5 mAh g −1 ). When operated at the limited capacity, this battery can run for over 120 cycles with the low charge overpotential of < 2 V. Moreover, PMMA/IL-GPE-based flexible Li–O 2 batteries also exhibit good performances after different bending conditions.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
·
2025
·
IF 3.8
Yansong Liu,Yongsheng Liu,Yejie Cao,Xiang Zheng,Xiaokun Sun,Yang Xu
Dual porous yttria-stabilized zirconia (YSZ) ceramics were fabricated via digital light processing (DLP) additive manufacturing using polymethyl methacrylate (PMMA) microspheres as pore-forming agent for the first time. The results showed that the introduction of PMMA microspheres effectively reduced the viscosity of the photosensitive YSZ ceramic slurry used in DLP printing, improved the cured depth of the slurry, and did not exert a strong influence on stability. After sintering at 1400°C, pores with dual scales were generated in the ceramics, while exhibiting the optimal physical and mechanical properties. With the increase of PMMA content from 0 to 40 vol%, the open porosity increased from 1.96% to 34.06% and the density decreased from 5.92 to 3.82 g/cm 3 , respectively. The compressive strength and thermal conductivity of porous ceramics decreased from 350.54 to 99.85 MPa and from 2.80 to 1.46 W/(m⋅K), respectively. This investigation opens up new prospects for the fabrication of porous YSZ ceramics with low thermal conductivity and high mechanical properties.
研究领域:
材料科学
·
增材制造
·
陶瓷工程
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）