NEW JOURNAL OF CHEMISTRY
·
2018
·Vol. 42
·期 16
·13382-13392
·
IF 3.201
Ke Zheng,Shaoqi Zhou,Xuan Zhou
A series of low-cost poly(vinyl butyral) (PVB)/poly(vinyl chloride) (PVC) blended substrates were fabricated for the preparation of thin-film composite (TFC) forward osmosis (FO) membranes. The effect of PVB blend ratio on the substrate and TFC membrane was investigated. The results showed that the properties of the substrates were significantly improved and that the selective layer became looser, rougher, and less crosslinked after the introduction of PVB. The water permeability was initially improved when the PVB blend ratio increased from 0% to 30%. However, the NaCl rejection was rapidly declined with a further increase in the blend ratio, which should be ascribed to a decrease in the crosslinked degree of the PA selective layer. Meanwhile, the calculated results shows the value of structure parameter is sharply decreased to 186 μm for TFC30 from 2680 μm for TFC0. The results demonstrated that a PVB blend ratio of 30% should be the optimal ratio for fabrication of the substrate for the TFC membrane showing satisfactory FO performance: a high water flux of 29.37/49.85 L m−2 h−1 (FO/PRO mode) and a low specific salt flux of 0.11/0.10 g L−1 (FO/PRO mode) using 1 M NaCl as the draw solution and DI water as feed solution.
研究领域:
材料科学
·
环境工程
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高影响因子
REACTIVE & FUNCTIONAL POLYMERS
·
2026
·
IF 5.1
Jingjing An,Rui Wang,Jianfeng Wang,Yanyu Yang,Wanjie Wang,Yanxia Cao
In this study, recycled poly(vinyl butyral) (r-PVB) and maleic anhydride grafted poly(ethylene-octene) (POE-g-MA) were employed to synergistically toughen polypropylene (PP) via one-step reactive melt blending. Results revealed that hydroxyl groups of r-PVB reacted with anhydride groups of POE-g-MA at the interface, generating in situ compatibilizers and significantly improving interfacial adhesion. Although thermodynamic predictions suggested that POE-g-MA should encapsulate r-PVB, the actual morphology was dominated by viscosity-driven kinetics, leading to the formation of a unique core-shell structure with r-PVB as the shell and POE-g-MA as the core. This morphology effectively promoted energy dissipation, enabling the PP/r-PVB/POE-g-MA (70/10/20) blend to achieve a notched impact strength of 78.0 kJ/m 2 , which is 16.6 times higher than that of neat PP, thus realizing super-toughening. This work not only provides a new pathway for value-added recycling of r-PVB but also reveals a kinetic-dominated mechanism of phase morphology in reactive multicomponent blends.
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INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2026
·Vol. 65
·期 29
·15525-15536
·
IF 3.9
Lin Weijie,Yang Yuanhaobo,Zhang Jiaxing,Yang Qin,Fu Runfang,Yan Bin,Chen Sheng
Traditional
liquid electrolytes suffer from inherent limitations,
including poor shape adaptability, inferior interfacial stability,
low safety, and narrow operational voltage windows. Moreover, the
risks of electrolyte leakage complicate device packaging and increase
its cost. In this work, we fabricate an integrated electrochromic-solid
polymer electrolyte (EC-SPE) material based on viologen derivatives
and cross-linked polyvinyl butyral (PVB) via a solution-casting process.
The EC-SPE is laminated between transparent conductive indium tin
oxide (ITO) electrodes to form an ordered ITO/EC-SPE/ITO assembly.
The cross-linked PVB-based SPE (denoted as PK-10) exhibits high ionic conductivity
(3.48 mS·cm –1 ), strong adhesion
(1.32 MPa), and excellent thermal stability. Tailored viologen derivatives
(V1 and V2) show significantly improved solubility in organic solvents
and, through π–π stacking during solvent removal,
achieve uniform dispersion while effectively suppressing crystallization.
The resulting EC-SPE films (PKV1 and PKV2) demonstrate nearly 99%
initial transmittance, high optical modulation (Δ T = 65% and 60%), and fast switching (coloration/bleaching times of
8.2 s/2.5 s and 3.9 s/2.4 s, respectively). Notably, they retain 91.5%
and 85.7% of their initial Δ T after 10,000
and 5000 cycles, respectively, indicating outstanding cycling stability.
This work provides a promising strategy for developing high-performance
integrated EC-SPE devices.
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CHINESE JOURNAL OF CHEMISTRY
·
2011
·Vol. 29
·期 8
·1753-1758
·
IF 0.773
Xiuling Ma,Zhen Chen,Xiao Chen,Riyao Chen,Xi Zheng
A novel molecularly imprinted composite nanofiber was prepared by a simple electrospinning technique, in which polyvinylbutyral (PVB) was chosen as matrix, β -cyclodextrin ( β -CD) was used as a functional monomer and naringin (NG) as template molecules. After cross-linked by hexamethylene diisocyanate (HMDI), the composite nanofiber exhibited a high specific binding capacity. The morphological structure of the nanofibers was studied by means of infrared spectrum (IR), X-ray diffraction (XRD), and scanning electron microscopy (SEM). The β -CD molecules were mostly homogeneously distributed within the PVB nanofiber without forming phase separated crystalline aggregates. Compared with traditional imprinted β -CD polymer, the binding experiments demonstrated that the molecularly imprinted composite nanofiber shows the specific binding sites and the selective binding ability for NG. The molecularly imprinted nanofiber could be used at least six times without any loss in binding capacity.
研究领域:
材料科学
·
药物化学
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MACROMOLECULES
·
2023
·
IF 5.5
Xu Chen,Changzhu Lv,Yahui Li,Zishuo Wu,Renkuan Cao,Weihang Fei,Jin Lv,Wei Chen
The complicated chemical structure of poly(vinyl butyral) (PVB) as well as its acetalization mechanism was unveiled by multidimensional NMR with the assistance of the 13C labeling. The isotope enrichment significantly suppresses the NMR signal from the side groups, which enables us to precisely determine the sequence distribution of various monomers, i.e., vinyl butyral (VB) and vinyl alcohol (VA), along the PVB backbone. The primary, secondary, and tertiary carbons were directly identified by NMR spectral editing through 13C distortionless enhancement by polarization transfer (DEPT) NMR experiments. Various 2D-NMR experiments, including COSY, NOESY, HMQC, and INADEQUATE, were adopted to establish homo- and heteronuclear coupling through either chemical bond or space correlation. Because only the PVB backbone is 13C-enriched, all 1H and 13C NMR spectra provided unprecedented resolved information on various sequence information. In total, 13 13C and 18 1H resolved NMR peaks are assigned. Based on the accomplished 13C NMR peak assignment and quantitative 13C NMR of PVB with different acetalization degrees as well as numerical modeling, a possible acetalization reaction mechanism is proposed.
研究领域:
高分子化学
·
分析化学
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Energy Storage Materials
·
2023
·
IF 20.4
Xiaoyu Zhang,Jinhuan Wang,Dongqi Hu,Wei Du,Chuanxin Hou,Huiyu Jiang,Yuting Wei,Xiao Liu,Fuyi Jiang,Jianchao Sun,Hua Yuan,Xiaoyu Huang
The large scale application of solid state lithium metal batteries based on NASICON-type Li 1+x Al x Ti 2-x (PO 4 ) 3 (LATP) electrolyte has been hindered by insufficient ion conductivity and interface instability due to the spontaneous Ti 4+ reduction reaction between Li metal and LATP. To address these issues, Li 1.7 Al 0.3-x Bi x Ti 1.7 (PO 4 ) 3 (0 ≤ x ≤ 0.03) (LABTP) electrolytes were prepared, and the influence of Bi substitution on the microstructure and conductivity of LATP were investigated. Suitable amount of Bi substitution accelerates densification and improves the ionic conductivity . Furthermore, unlike commonly used polyethylene oxide (PEO) and polyvinylidene difluoride (PVDF), polyvinylbutyral (PVB)-based quasi-solid electrolytes with LABTP is first-time proposed to improve the compatibility and stability of the LATP/Li interface. The synergistic effect of Bi doping and PVB reduces the reduction reaction of Ti 4+ . Small voltage hysteresis is observed in the corresponding Li||Li symmetric cells. The solid-state Li|LABTP@PVB|LiFePO 4 full cell can deliver a high capacity of 146.2 mAh g −1 and a stable cycling performance without reduction after 200 cycles.
研究领域:
材料科学
·
电化学
·
电池技术
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APPLIED SURFACE SCIENCE
·
2026
·
IF 6.6
Qian Liu,Miao Li,Jiahao Zhou,Tianxing Ji,Xuna Liu,Zhongquan Zhong,Ping Yang
To address the issues of poor fluidity, significant loss during cycling, and unsuitability for industrial adsorption of lithium ion-sieve powders, the Ce 4+ -doped layered Mn-based lithium ion-sieve precursor (Li 1.37 Ce 0.001 Mn 1.22 O 3 ) was fabricated into spherical particles, by using blend of PVB and PMMA with anti-solvent phase inversion method. The incorporation of PMMA appropriately could increase the porosity and pore size of the spherical particles, while enhancing strength and compression resistance. The porosity of SCLMO was 47.86%, with particle size range of 1.5–2.0 mm. The maximum load capacity was 627.53 N, while the maximum stress was recorded at 233.46 MPa, and the Young’s modulus was 369.70 MPa. The adsorption process of corresponding lithium ion-sieve spherical particles (SCHMO) was characterized by both physical and chemical reactions, adhering to Langmuir adsorption isotherm model and following pseudo-second-order kinetics, with intraparticle diffusion being the dominant mechanism. After 15 adsorption cycles, the adsorption capacity of SCHMO for Li + stabilized at approximately 20 mg/g, with Mn dissolution loss ratio of less than 0.5%. In experiments involving the static adsorption of Li + from actual oil and gas field produced water, the adsorption capacity was recorded at 17.84 mg/g. The lithium ion-sieve spherical particles exhibited significant potential for further industrial applications.
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NEW JOURNAL OF CHEMISTRY
·
2021
·Vol. 45
·期 48
·22869-22875
·
IF 3.591
Bingyan Han,Jingmei Jiang,Qifang Yan,Jing Zhao,Ze Xin,Qin Yan,Gaohong He
Carbon dots (CDs) have been studied for years as one of the most promising fluorescent nanomaterials. Herein, fluorescent CDs excited by visible light emitted red fluorescence with a quantum yield of 32.8% via a facile hydrothermal treatment. In addition to being applied in cell imaging, the as-prepared CDs were also utilized in the detection of ammonia and formaldehyde in aqueous solutions because of their pH-dependent properties, with a low limit of detection of 3.7 nM and 44 μM, respectively. Furthermore, we synthesized flexible and transparent fluorescence films by mixing the as-prepared CDs and PVB powder, which can be utilized to directly detect ammonia gas under visible light according to significant colour changes. Therefore, the as-prepared CDs would have more prominent and influential application in clinical diagnostics and environmental analysis.
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PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
·
2025
·
IF 7.8
Yingjun Gao,Yinyan Guan,Jiyan Liang,Lei Yu,Yumeng Ye,Shengnan Chen,Jiayu Lv,Dehong Cheng
To address the demands for heavy metal wastewater treatment and copper resource recycling, hybrid capacitive deionization (HCDI) technology offers advantages of low energy consumption and ion selectivity. However, the practical application of HCDI is limited by the insufficient adsorption performance and stability of electrode materials. In this study, flower-like copper sulfide (CuS) was synthesized via a hydrothermal method and used as CDI electrodes, with polyvinylidene fluoride (PVDF) and polyvinyl butyral/polyvinylpyrrolidone (PVB/PVP) as binders. The effects of the two binders on electrode structure and performance were investigated, focusing on elucidating the selective adsorption mechanism of CuS as an HCDI cathode. The CuS-PVDF electrodes exhibited superior conductivity and higher Cu 2+ adsorption capacity (551.49 mg·g −1 at 1.0 V), attributed to the polar stabilization effect of rigid molecular chains and low surface energy of PVDF, which facilitated efficient utilization of CuS active sites. In contrast, the PVB-PVP binder caused shielding of active sites on CuS, and delayed charge transport due to encapsulation by flexible polymer chains. Moreover, the CuS electrodes exhibited selective adsorption of Cu 2+ in the HCDI system. The selectivity of Cu 2+ exceeded 70 % in a mixture of multiple heavy metal ions. This selective mechanism can be attributed to pK sp (CuS) = 40.3 and redox-mediated phase transformation (CuS→Cu 2 S/Cu 2 O/Cu).
研究领域:
环境工程
·
材料科学
·
电化学
·
水处理技术
·
纳米技术
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EUROPEAN POLYMER JOURNAL
·
2024
·
IF 5.8
Dan Zhang,Yue Zhao,Qi He,Kaixuan Feng,Zhi Hu,Guohong Ma,Zengxi Pan
Magnesium (Mg) alloys are susceptible to being attacked by corrosive ions in practical application environments, which limits their widespread application as the most promising engineering material. Herein, the superhydrophobic composite coating PVB/STA/ZIF-8@SiO 2 (PSZS) has been designed on the surface of Mg alloy by using a drop coating method to improve its corrosion resistance. In this study, we provide an approachable decoration strategy for hydrophobic and hierarchical modification of zeolite imidazolate frameworks (ZIF-8) with stearic acid (STA) and SiO 2 , and combined with polyvinyl butyral (PVB) to form a composite coating with excellent performance on the substrate surface. Notably, the PSZS composite coating exhibited superhydrophobic and the contact angle is greater than 150° after 300 cm of mechanical friction. The electrochemical testing of the PSZS composite coating indicated that it greatly protected the Mg alloys from corrosion. Moreover, the PSZS coating displayed highly effective corrosion resistance even after being immersed in 3.5 wt% NaCl aqueous solution for 7 days. Overall, the PSZS composite coating with the advantages of corrosion resistance, corrosion durability, superhydrophobic, abrasion resistance and simple preparation process broadens the horizons of Mg alloy corrosion resistance research.
研究领域:
材料科学
·
腐蚀与防护
·
表面工程
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高影响因子
RARE METALS
·
2026
·Vol. 45
·期 4
·e70214
·
IF 12.1
Zong-Kai Yan,Kai-Long Li,Ling-Qiao Tang,Si-Yu Kong,Di-Wen Jiang,Hao-Wen Zhang,Zhe-Sheng Feng,Yan-Lin Zhu,Fan-Bin Meng,Yan Wang
en This link goes to a English section zh This link goes to a Chinese section The rapid advancement of 5G communication technology has intensified electromagnetic pollution, creating an urgent demand for flexible multifunctional fabrics with efficient electromagnetic interference (EMI) shielding performance. This study proposes a novel material-stacked construction strategy to fabricate multifunctional MXene/cellulose nanofiber/polyvinyl butyral (MXene/CNF/PVB) composite fabrics by sequentially depositing two-dimensional MXene nanosheets, CNF, and PVB onto the surface of linen fabric. Benefiting from the pretreatment with the cationic polyelectrolyte poly(diallyldimethylammonium chloride) (PDDA), MXene nanosheets can adhere firmly to the fibers via electrostatic self-assembly and impart the fabric with excellent EMI shielding performance (47.87 dB). Meanwhile, optimizing the CNF concentration effectively enhances the mechanical strength of the fabric (45.27 MPa). The incorporation of PVB significantly improves the environmental stability and durability of the composite fabrics. As a result of the synergistic combination of high electrical conductivity and favorable infrared radiation suppression characteristics of MXene, the fabricated MXene/CNF/PVB composite-coated fabric achieved a mechanical strength of 49.68 MPa, an EMI SE of 39.31 dB, efficient Joule heating (62.5°C at 5 V), and effective infrared stealth, as evidenced by a low radiation temperature of 51.3°C against a 100°C background. These results demonstrate the strong potential of MXene/CNF/PVB composite fabrics for next-generation wearable and multifunctional electronic applications. 摘要 en This link goes to a English section zh This link goes to a Chinese section 5G通信技术的飞速发展加剧了电磁污染问题, 亟需开发具有高效电磁干扰 (EMI) 屏蔽性能的柔性多功能织物。本研究提出一种新颖的材料堆叠构建策略, 通过将二维MXene纳米片、纤维素纳米纤维 (CNF) 和聚乙烯醇缩丁醛 (PVB) 依次沉积在亚麻织物表面, 制备出多功能MXene/CNF/PVB复合织物。基于阳离子聚电解质聚二烯丙基二甲基氯化铵 (PDDA) 的预处理, MXene纳米片可通过静电自组装牢固附着在纤维表面, 使织物获得卓越的电磁干扰屏蔽性能 (47.87 dB) 。同时, 通过优化CNF浓度有效提升了织物的机械强度 (45.27 MPa) 。PVB的引入则显著增强了复合织物的环境稳定性和耐久性。得益于MXene的低红外发射率和优异导电性, 最终制得的MXene/CNF/PVB复合织物展现出优异的综合性能: 电磁屏蔽效能达39.31 dB, 机械强度提升至49.68 MPa, 具备高效焦耳加热能力 (5 V电压下可达62.5℃) , 并表现出显著的红外隐身特性 (100℃时辐射温度仅为51.3℃) 。这些研究成果充分证明了MXene/CNF/PVB屏蔽织物在下一代可穿戴电子领域的巨大应用潜力。
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CERAMICS INTERNATIONAL
·
2019
·
IF 3.45
Xiaolei Song,Ying Song,Juan Wang,Qiang Liu,Zhenxin Duan
In this work, mesoporous alumina nanofibers were synthesized using polyvinyl butyral (PVB) as polymer template via electrospinning technique. Both alumina precursor sol and precursor solution mixed well with PVB ethanol solution in temperature range of 40–80 °C to attain transparent spinning solutions. Continuous precursor nanofibers with rough and warped surface were obtained after electrospinning. Calcination of precursor nanofibers in air yielded the opening of mesopores in alumina nanofibers. Rapid escape of gaseous products and phase separation between PVB and alumina precursors were responsible for the formation of porous framework.
研究领域:
材料科学
·
化学工程
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危险品化学品经营许可证（带存储）