Micro & Nano Letters
·
2018
·Vol. 13
·期 5
·661-665
·
IF 0.841
Bin Zhang,Jian Han
The preparation of silicon dioxide (SiO 2 )@poly(acrylic acid) (PAA) microsphere was reported. The modified microspheres can be well dispersed in polyvinyl chloride (PVC) matrix. The structure of SiO 2 @PAA microspheres can be well-controlled and its mixtures with chlorinated polyethylene (CPE) for controlling diisooctyl terephthalate (DOTP) migration from PVC matrix. The results showed that the migration of DOTP was decreased with increasing content of SiO 2 @PAA microspheres, and the use of CPE together with SiO 2 @PAA microspheres has a synergistic effect on the reduction of DOTP migration. Moreover, CPE can enhance the interface combination between SiO 2 @PAA microsphere and PVC, and good dispersibility was observed in PVC/CPE/SiO 2 @PAA composites.
研究领域:
材料科学
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高分子化学
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环境科学
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DOI
高影响因子
JOURNAL OF ELECTRONIC MATERIALS
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2022
·Vol. 51
·期 12
·6964-6974
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IF 2.047
Geng Zhibin,Liu Hong,Xiong Wei
Polymer/conductor composites are used in energy storage capacitors; however, they exhibit high interface leakage currents, causing low breakdown strength. Here, a ternary-blend strategy was used to synthesize polyvinyl chloride (PVC)/titanium carbide transition-metal carbide two-dimensional nanolayered material (Ti 2 C MXene)/diamond composites using solution casting. The PVC matrix exhibited low polarity and high insulation, while the Ti 2 C MXene and diamond fillers exhibited high conductivities and ultrahigh insulation properties, respectively. Overall, the PVC/Ti 2 C/diamond ternary composites exhibited better electrical properties than the PVC/Ti 2 C binary composites. In the ternary composites, PVC/Ti 2 C interface polarization caused high dielectric constants, while low leakage currents induced by diamond caused low dielectric losses and high breakdown strength. The optimum-composition (12 wt.% Ti 2 C and 4 wt.% diamond) ternary composite exhibited a high dielectric constant (~153 at 100 Hz), low dielectric loss (~0.14 at 100 Hz), low conductivity (~1.4 × 10 −6 S m −1 at 100 Hz), and high breakdown strength (~312 MV m −1 under a direct current field). This study indicates a synergistic effect between Ti 2 C MXene and diamond in the composite dielectrics, and could guide the fabrication of dielectric films for capacitors. Graphical Abstract
研究领域:
材料科学
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电气工程
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产品关联
DOI
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2017
·Vol. 42
·期 4
·2422-2431
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IF 3.269
Mei Wang,Xianghai Song,Jianchun Jiang,Jianling Xia,Haiyang Ding,Mei Li
Hydroxyl and nitrogen rich group-containing tung-oil-based ester (GEHTMA-1, GEHTMA-2, GEHTMA-3 and GEHTMA-4) plasticizers were successfully synthesized from tung-maleic anhydride and utilized to plasticize poly(vinyl chloride) (PVC). In comparison to petroleum-based plasticizers (e.g. DOTP), the mechanical test shows that bio-based GEHTMA-3 displays better mechanical properties, which means that GEHTMA-3 could endow PVC resins with well-balanced properties of flexibility and strength. With the addition of GEHTMA-3 into DOTP, PVC/DOTP/GEHTMA-3 exhibits better mechanical properties, plasticization performance, migration resistance and thermal stability compared with the PVC/DOTP system. Above all, PVC/28DOTP/12GEHTMA-3 shows the highest tensile strength and elongation of 32.19 MPa and 345.20%, respectively. PVC/32DOTP/8GEHTMA-3 displays the best thermal stability. The superior performance is attributed to the molecular interaction of GEHTMA-3 and DOTP with PVC. The interaction originates from the simultaneous introduction of hydroxyl, epoxy, benzene ring, ester and nitrogen rich groups into GEHTMA-3 structures. Besides, GEHTMA-3 presented good miscibility with PVC resins, particularly when a mixture of DOTP and GEHTMA-3 was used. In addition, possible plasticization of the PVC/DOTP/GEHTMA-3 system was presented.
研究领域:
材料科学
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化学工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2014
·Vol. 132
·期 2
·
IF 1.64
Zhenjiang Yu,Xuyang Liu,Fangbo Zhao,Xiaoyang Liang,Yu Tian
A novel low-cost SiO 2 /Polyvinylchloride (PVC) membrane with different nano-SiO 2 particles loading (0–4 wt %) was prepared by the phase-inversion process. The optimum nano-SiO 2 dosage was determined as 1.5 wt % based on the casting solution compositions, the membranes' mechanical properties and hydrophilicities, the pure water fluxes, microstructures, and absorption of protein. Compared with the bare membrane, the membrane with 1.5 wt % nano-SiO 2 addition presented better capabilities against the protein absorption and bacterial attachment, better antifouling performance, and higher flux recovery ratio in filtration of the supernatant liquor which collected from a secondary sedimentation tank in a municipal wastewater plant. The SiO 2 /PVC membranes have applicable potential in the municipal wastewater treatment for their low price, good antifouling performance and high removal efficiencies of SS (over 97.2%), COD (up to 82.9%) and total bacteria (more than 93.6%). © 2014 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015 , 132 , 41267.
研究领域:
环境科学
·
材料科学
·
水处理工程
✓ 已验证
DOI
高影响因子
JOURNAL OF MOLECULAR LIQUIDS
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2022
·
IF 6.633
Beihong Jiang,Xiaolong Chang,Guiyang Yan,Jiwei Wang,Luan Cui,Boyan Zhu,Xinqiao Tang,Fanbao Meng
Ionic polymers based on tetrachloroferrate anions (FeCl 4 − ) have become one of the attractive functional materials due to their magnetic property. Series of polyvinyl chloride (PVC)-based ionic polymers ([PBCs][FeCl 4 ]) containing tetrachloroferrate anions were prepared by self-assembly using PVC , cholesteric pyridine-3,5-dicarbonate, 4,4 -bipyridine and FeCl 3 ·6H 2 O, and their liquid-crystalline (LC) behavior and magnetorheological (MR) effect were investigated in this study. The chemical structure, thermal properties and LC behavior were characterized by various equipment and instruments. The magnetic field response behavior, MR effect, and sedimentation stability were investigated by various technical methods. The [PBCs][FeCl 4 ] showed smectic A phase on heating and cooling cycles. The magnetorheological fluids (MRFs) were fabricated by the [PBCs][FeCl 4 ] polymers as suspended particles and silicone oil as carrier liquids, which presented a Bingham flow characteristics under an external magnetic field. For these [PBCs][FeCl 4 ]-based MRFs, both shear stress and magnetorheological effects increased with the increase of magnetic field strength, and it exhibited a maximum MR efficiency of 15.3 at 1.23 s −1 of shear rate under 80 kA/m of magnetic field strength. The MR effect of the [PBCs][FeCl 4 ]-based fluids was originated from a synergistic effect between the LC orientation of the mesogens and rearrangement of the FeCl 4 − anions when an external magnetic field was applied.
研究领域:
材料科学
·
化学
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DOI
高影响因子
FUEL
·
2022
·
IF 8.035
Maolin Xu,Chengyang Cao,Hongyun Hu,Yang Ren,Guangzhao Guo,Lifang Gong,Junwei Zhang,Tong Zhang,Hong Yao
With the massive production and discard of PVC artificial leather, it is urgently needed to find an efficient and environment-friendly method to dispose of this material made from PVC and blended cloth (BC). As a widely accepted way to dispose of municipal solid waste, pyrolysis was chosen for this study. The pyrolysis experiments of PVC, BC, and their mixture were conducted to characterize PVC artificial leather’s pyrolysis behavior and product characteristics. TG-FTIR and kinetics analysis showed the strong synergistic effect between PVC and cellulose in BC occurred at 240 °C – 314 °C, resulting in cellulose dehydration and aromatization. An exceptionally high tar yield of 54.96 wt% was obtained by fast pyrolysis of the mixture at 500 °C. GC–MS analysis of tar proved BC consisted of cellulose, PET, and PA. The high tar yield of co-pyrolysis came from the synergistic effects of PVC on cellulose and PET, both of which formed terephthalic acid, di(2-chloroethyl) ester (TADE). At 500 °C, the tar of the mixture mainly contained TADE (18.72 wt%), terephthalic acid (18.56 wt%), and aromatics (19.04 wt%). The co-pyrolysis interaction mechanism at 500 °C was deduced. Our study could provide theoretical guidance for recycling PVC artificial leather waste.
研究领域:
环境科学
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化学工程
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材料科学
✓ 已验证
DOI
高影响因子
Polymers
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2022
·Vol. 14
·期 21
·4560
·
IF 4.967
Yanqin Shi,Yuchen Yao,Songyan Lu,Lukai Chen,Si Chen,Huiwen He,Meng Ma,Xu Wang
The effect of different plasticizers on thermal stability, transparency, and migration resistance of the PVC stabilized with zinc arginine [Zn(Arg)2] was investigated. The thermal stability, migration resistance, and transparency of PVC with tributyl citrate (TBC) were better than PVC with dioctyl phthalate (DOP) characterized by oven aging method, migration test, and near infrared-visible-ultraviolet spectrophotometer. At the same time, the longer the carbon chain in citric acid esters, the better the thermal stability and transparency of PVC sample. The hydroxyl group in citric acid esters is helpful to improve the thermal stability of PVC samples. However, the elongation at break and Tgvalue of PVC containing DOP were very close to those of PVC containing TBC. The calculation results of Hansen solubility parameters also illustrated that DOP had better compatibility with PVC than TBC. Therefore, the excellent transparency and thermal stability of TBC plasticized PVC were attributed to the good compatibility between TBC and Zn(Arg)2, which was verified by the solubility test. Lastly, the mixture of dioctyl terephthalate (DOTP) and TBC was used as plasticizers for Zn(Arg)2stabilized PVC. When the ratio of TBC and DOTP was 1:1, the transparency, thermal stability, and migration resistance of Zn(Arg)2stabilized PVC samples were better than those of PVC plasticized by DOP or TBC alone. The mechanism was that the compatibility between Zn(Arg)2and PVC was greatly improved by the synergetic effect of TBC and DOTP, resulting in the improvement of thermal stability, migration resistance, and transparency of PVC samples.
研究领域:
材料科学
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化学工程
✓ 已验证
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2022
·
IF 5.532
Zhen Yang,Ying Li,Peihua Ma
H 2 TiO 3 is the most promising and highly selective lithium-ion sieve. In this study, HTO-PVC- x ( x = 10, 15, 20, 25, and 30) lithium-ion sieves were prepared via an antisolvent method using PVC as the matrix. The X-ray diffraction (XRD) and scanning electron microscopy (SEM) results showed that Li 2 TiO 3 was preferentially indexed to a C 2/ c monoclinic structure. LTO-PVC- x had a spherical size of 300 μm and an enormous specific surface area. The morphology and size of HTO-PVC- x obtained by HCl elution were consistent with those of LTO-PVC- x , indicating good separation and recycling properties. HTO-PVC-15 had a higher adsorption performance and adsorption capacity at a lower initial Li + concentration. The adsorption behaviour of HTO-PVC-15 is in accordance with the Langmuir isothermal model and pseudo-second-order model, which belongs to the chemical adsorption process . It reached 96% of its equilibrium adsorption capacity within 2 h. Simultaneously, it maintained high adsorption selectivity and cycling performance and a low Ti 4+ dissolution rate. Thus, HTO-PVC-15 has immense potential to be used for salt lake brine adsorption applications.
研究领域:
材料科学
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环境工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF VINYL & ADDITIVE TECHNOLOGY
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2022
·Vol. 29
·期 2
·343-355
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IF 2.297
Wenshuo Zhang,Huiyun Xia,Lifang Song,Huiwen Huo,Changjie Lu,Yihan Sun,Yanhui Niu
In order to improve the deficiency of traditional polyvinyl chloride (PVC) heat stabilizer, triazole-based zinc-containing complex (abbreviated as [Zn(ttr)(OAc)]) with good compatibility with PVC and a strong ability to absorb HCl was prepared in this paper, which was characterized by Fourier transform infrared (FTIR) spectroscopy, scanning electron microscope (SEM) and thermogravimetric analysis (TGA). PVC sheets were prepared by mixing PVC with composite heat stabilizer (DAJ) composed of [Zn(ttr)(OAc)] and 1,3-dimethyl-6-aminouracil (DAU). Different kinds and amounts of common auxiliary heat stabilizers were selected and added to the DAJ system to study the effect of thermally stable system on PVC by Congo red test, Discoloration test, Dynamic thermal stability test, SEM, TGA and Transmittance test and the relevant mechanism was explored. The PVC sheets with DAJ blended by 1.2 phr DAU and 0.8 phr [Zn(ttr)(OAc)] showed relatively excellent coloring properties, long-term thermal stability, and high light transmittance. Compared with dibenzoylmethane (DBM), 0.5 phr sorbitol and 1.5 phr epoxy soybean oil (ESBO)/Antioxidant 168 showed good synergistic effect with DAJ. Due to the polyhydroxy nature of sorbitol, the thermal stability of PVC was significantly improved, and the transmittance of PVC benefited from the similar miscibility of ESBO long chain. This was also confirmed by TGA and SEM of PVC sheet.
研究领域:
材料科学
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化学工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF POLYMERS AND THE ENVIRONMENT
·
2022
·Vol. 30
·期 8
·3270-3278
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IF 4.705
Chu Hong-ying,Li Hua-bei,Sun Xiao-yan,Zhang Yao-wang
In this paper, we synthesized a kind of bio-based plasticizer epoxidized linoleic acid cardanol ester (ELCE) from cardanol and linoleic acid. Its chemical structure was characterized with FT-IR and 1 H NMR. Polyvinyl chloride (PVC) blends plasticized with ELCE were prepared via thermoplastic blending with torque rheometer. The performance including torque, mechanical property, thermal stability, plasticizing property and migration resistance of plasticized PVC blends were investigated and compared with plasticized PVC blends with commercial plasticizer dioctyl phthalate (DOP). The results showed that ELCE improved thermal stability of PVC blends. ELCE played more excellent plasticizing effect on PVC blends than DOP. The better solvent extraction resistance and volatile resistance of ELCE make it possible to completely replace DOP in PVC products.
研究领域:
材料科学
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化学工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2017
·Vol. 135
·期 10
·45940
·
IF 1.86
Mei Wang,Jianchun Jiang,Jianling Xia,Shouhai Li,Mei Li
Phosphate ester groups containing ricinoleic acid-based Ca/Zn (LPPRA-Ca and LPPRA-Zn) stabilizer was successfully synthesized from ricinoleic acid (RA) and used as thermal stabilizers for poly(vinyl chloride) (PVC). These thermal stabilizers were characterized by Fourier transform infrared spectrometry, 1 H nuclear magnetic resonance, and inductively-coupled plasma atomic emission spectroscopy. The effects of LPPRA-Ca/LPPRA-Zn, CaSt 2 /ZnSt 2 , and other stabilizers on the thermal stability of PVC were studied through Congo Red test, discoloration tests, thermogravimetric analysis (TGA), TGA–infrared, and TGA–mass spectrometry. The thermal stability tests show that LPPRA-Ca/LPPRA-Zn displays the best initial color stability and long-term thermal stability for PVC. The superior performance is attributed to the synergistic effect of LPPRA-Ca and LPPRA-Zn. Moreover, a lower Zinc content of LPPRA-Zn in PVC helps to decrease the “zipper dehydrochlorination” of the product, which contributes to a better initial thermal stability. Except for the better stabilization performance, LPPRA-Ca/LPPRA-Zn also displays better plasticization performance for PVC compared with other stabilizers. A possible stabilizing mechanism of PVC/LPPRA-Ca/LPPRA-Zn system was presented. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018 , 135 , 45940.
研究领域:
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF VINYL & ADDITIVE TECHNOLOGY
·
2019
·Vol. 26
·期 1
·35-42
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IF 1.292
Yanke Li,Erlei Yu,Xiangming Yang,Zhong Wei
A series of multiarm structure hyperbranched polyester-b-poly( ε -caprolactone) (HEPCLs) with different lengths of poly( ε -caprolactone) (PCL) segments ( s = 3, 6, 7, 8) were synthesized. Hyperbranched polyester (HE) was synthesized from glycidol and succinic anhydride and used as a macromolecular polymerization initiator for ε -caprolactone. The HEPCLs were used as polyvinyl chloride (PVC) plasticizers and the mechanical properties, thermal properties, morphology, and migration stabilities of PVC films were explored. The plasticizing efficiency increased with the increase in PCL segments, and the plasticizing efficiency of HEPCL 8 exceeded that of dioctyl phthalate. Scanning electron microscopy and solid-state 1 H NMR showed that the HEPCLs possess better compatibility with PVC than HE. Moreover, HEPCLs exhibited excellent migration stability even at very harsh condition, indicating that HEPCLs can be used as no-migration PVC plasticizers in medical products, children's toys, and food packaging. J. VINYL ADDIT. TECHNOL., 26:35–42, 2020. © 2019 Society of Plastics Engineers
研究领域:
材料科学
·
高分子化学
✓ 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）