JOURNAL OF APPLIED POLYMER SCIENCE
·
2024
·Vol. 141
·期 33
·e55847
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IF 2.7
Chao Zhang,Erlei Yu,Heyun Wang,Dong Huang,Guojun Ding,Zhonghua Zhao,Zhong Wei
In response to the health and environmental concerns associated with the plasticizer dioctyl phthalate (DOP), this research explores the utilization of methyl oleate (MO) derived from plant oil, 1,2,4-Benzeneticarboxylic anhydride (TMA) and isobutyric anhydride (IA) as a precursor for synthesizing a hyperbranched polyester named IA-MO-TMA. This polyester serves as an alternative plasticizer for Polyvinyl chloride (PVC). The chemical structure of IA-MO-TMA was thoroughly characterized using Fourier Transform Infrared Spectrometer (FTIR) and nuclear magnetic resonance hydrogen spectra, and its molecular weight was assessed. The PVC film, plasticized with IA-MO-TMA, underwent comprehensive testing using techniques such as differential scanning calorimetry, scanning electron microscopy, and thermogravimetric analysis. Notably, the glass transition temperature ( T g ) of the plasticized PVC film exhibited a significant reduction from 75°C to −6.7°C. The plasticized film demonstrated an elongation at break of 318.1%, a tensile strength of 19.2 MPa, and a plasticizing efficiency of 109.9%. Moreover, the use of IA-MO-TMA as a plasticizer increased the initial decomposition temperature of PVC film from 235.6 to 264.1°C. Additionally, the extraction rate of IA-MO-TMA in petroleum ether was found to be 35.6% lower than that of DOP.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2024
·
IF 2.7
Shujuan Yu,Xiang Deng,Cailong Deng,Jing Xia,Qilong Li
In this paper, a novel broad-spectrum chitosan polymer carbon dots-based UV absorber ((CS-PCDs)-g-UV-0) was obtained by grafting UV-0 onto chitosan-based polymer carbon dots (CS-PCDs) through a simple green microwave method to achieve the macromolecular quantification of UV-0 UV absorbers. The products were characterized by means of IR spectroscopy, NMR carbon spectroscopy, UV absorption spectroscopy, TGA, and XPS. Finally, the UV absorber was applied to natural rubber (NR), and its anti-UV aging properties were systematically investigated by conducting UV-accelerated aging experiments on the carbonyl index, weight loss rate, contact angle, and SEM morphology of the NR materials added with (CS-PCDs)-g-UV-0 before and after aging. The results showed that after 28 days of aging of NR added with 2% (CS-PCDs)-g-UV-0, the increase in carbonyl index was considerably less significant than that of pure NR samples, as was the change in contact angle. According to the observations made by SEM, the addition of this (CS-PCDs)-g-UV-0 caused a significant delay in the occurrence of cracking on the surface of the material. In summary, a novel UV absorber is proposed in the present study to enhance the performance of NR in UV aging resistance.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2025
·
IF 2.8
Hongbo Xiao,Xin Huang,Wanyu Huang,Yufei Peng
In order to improve the flame retardancy, smoke suppressing, and mechanical properties of epoxy resins (EP), while pursuing low toxicity, environmental protection, and sustainable development, a reactive biobased flame retardant (TVD) containing P/N was synthesized by the one-pot method. The flame retardant, consisting of vanillin, 2,4,6-triaminopyrimidine, and DOPO as reactants, contained reactive groups in its structure and was introduced as a co-curing agent into the DDM-cured EP system. EP/TVD10 (at a phosphorus content of 0.58 wt%) achieved a UL-94 V-0 rating with an increased limit oxygen index (LOI) value of 34.2% (26.5% for pure EP), and the cone calorimetric test (CCT) results showed a decrease in total heat release (THR) values of 33.8% and a decrease in total smoke production rate (TSP) of 21.1% compared to pure EP. In addition, the introduction of TVD improved the mechanical properties of the epoxy resin, with an increase in flexural strength and modulus of 8.7% and 6.5% and a slight increase in impact toughness for EP/TVD10. These results indicate that TVD is a multifunctional and efficient bio-based flame retardant, which provides new ideas for the development of high-performance modified epoxy resin materials.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2024
·Vol. 141
·期 31
·e55717
·
IF 2.7
Xiongfei Zhang,Pengyun Li,Dan Huang,Xiang Shi,Yana Shi,Chunxiao Qu,Qianya Tan
Although significant efforts have been undertaken to explore the toughening of epoxy resins, it remains challenges to establish a simple and effective toughening technique which does not compromise its strength, thermal stability and processing performance. In this paper, toluene-diisocyanate-trimer (TDI-T) was utilized to manufacture a novel epoxy-terminated dendritic modifier TDI-T glycol diglycidyl ether (TDI-T GLDE). When the addition of TDI-T GLDE reaches 20% of the resin mass, the tensile strength, tensile elongation, compressive strength and impact strength were increased by 28.1%, 75%, 24.8%, and 138.0% respectively, compared to E-51. The thermal properties of the samples have been improved, including an increased glass transition temperature (Tg) from 68.2 to 73.2°C, as well as an increase in the initial decomposition temperature from 240.6 to 257.7°C. The toughening mechanism of TDI-T GLDE was studied through a combination of mechanical performance tests, thermal performance tests, and resin fracture surface morphology analysis.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2024
·
IF 2.7
Xuhui Wang,Guojie Zhang,Huanhuan Dong,Yong Zhang
Maltitol, a natural compound, offers a potentially eco-friendly alternative to conventional auxiliary thermal stabilizers. Its auxiliary stabilization effect was studied by discoloration tests, Congo red tests, thermogravimetric analysis, and UV–visible spectroscopy. Additionally, x-ray photoelectron spectroscopy and discoloration tests were used to study the stabilizing mechanisms of maltitol. Compared to dipentaerythritol, commonly used in the PVC industry, maltitol as an auxiliary stabilizer exhibits better improvement in thermal stability. This improvement is related to its melting point, ability to complex with zinc chloride, and content of hydroxyl groups. Furthermore, the addition of maltitol in PVC not only maintains good transparency of PVC basically unchanged but also improves the mechanical properties. Maltitol, as a natural, eco-friendly, and efficient auxiliary thermal stabilizer, exhibits a promising application prospect in PVC materials.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2025
·
IF 2.8
Qing Tan,Chen Mao,Xiaochang Hao,Ye Tao,Xinghou Gong
To address the challenges of high brittleness and poor crystallization capability in polylactic acid (PLA), glass fiber (GF), and polycaprolactone (PCL) were selected as reinforcing and toughening agents, respectively, for property modification. In the resulting composites, an interfacial layer forms between the polymer matrix and GF, significantly influencing the interfacial adhesion quality and the overall mechanical properties of the material. To enhance interfacial compatibility, oleic acid (OA) was introduced as a coating via the hydrophilic Si O Si bonds on the GF surface. Combined with treatment using a silane coupling agent (KH550), this process resulted in dual-surface modification of glass fiber (OKGF). PLA/PCL/GF (or OKGF) composites with mass fractions of 5%, 10%, 15%, and 20% OKGF were fabricated using solution dissolution and melt blending techniques. Scanning electron microscopy analysis revealed excellent interfacial adhesion between OKGF and the polymer matrix. The composite with 15% OKGF content exhibited optimal mechanical properties, achieving maximum tensile strength (65.5 MPa) and modulus (1113.0 MPa), representing a significant enhancement. Moreover, OKGF served as an effective heterogeneous nucleating agent, resulting in a crystallinity of 19.1% at 15% OKGF content—an 88% increase compared with the PLA/PCL blend (10.2%).
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2024
·Vol. 141
·期 23
·e55477
·
IF 2.7
Zhenhua Lu,Chuncheng Pan,Yong Hou,Zhaobin Zhang,Jiakuan Fu,Peng Li
Polyether polyols can improve the performance of waterborne epoxy curing agent. In this paper, intermediates were synthesized from polyether triols with epoxy resin E-51 and introduced into the epoxy curing agent by reacting with TETA. This paper focuses on the process of synthesizing the intermediates. The 2K waterborne epoxy coating film prepared with polyether triols-modified waterborne epoxy curing agent exhibits desirable corrosion protection capacity and neutral salt spray resistance up to 600 h. In addition, the 2K waterborne epoxy coating film prepared using the modified waterborne epoxy curing agent with polyether triols displayed improved surface appearance, mechanical properties, and water resistance.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2024
·Vol. 141
·期 14
·e55186
·
IF 2.7
Yong Wang,Liang Wen,Jiajian Liu,Chuncheng Li,Tian Yin,Yaonan Xiao,Zhikui Jiang,Shaohua Wu,Zijian Zhang,Bo Zhang
Bio-based copolymers with excellent mechanical properties and biodegradability are highly desired for packaging and agricultural applications. In this work, a series of high molecular weight bio-based poly(ester-carbonate)s are synthesized using glycolic acid (GA), dimethyl carbonate (DMC), and 1,4-butanediol (BDO). The intrinsic viscosity ([ η ]) of these copolymers ranges from 0.70 to 1.11 dL/g. The tensile strength, elastic modulus, and elongation at break of PBCGA10 are 19.69 ± 2.40 MPa, 151.20 ± 37.17 MPa, and 1173 ± 142%, respectively, which are superior to the mechanical properties of PBAT. The degradation weight loss of PBCGA10 and PBCGA20 after 30 days can reach 8% and 40%, respectively, indicating excellent degradation performance of the copolymers. Moreover, copolymers undergo degradation through a surface degradation mechanism. The main products of copolymer degradation are BDO, CO 2 , and H 2 O, which do not cause harm to organisms and the environment.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2024
·
IF 2.7
Wenjin Wang,Chuanjiang Zhou,Jiangping Guo,Yijia Yu,Wenjuan Xia,Zhaoqiang Wu,Hong Chen
With the demand for the development of lipid–polymer conjugates (LPCs) for biomedical applications, the development of novel, rapid, and efficient methods for the synthesis of LPCs is of great significance. In this study, a novel Y-type photoinitiator (Lipid-PI) containing a diacylglycerol group was first synthesized, and then the polymerization of conjugated vinyl monomers such as oligoethylene glycol methyl ether methacrylate (OEGMA) and N,N -dimethylacrylamide could be rapidly initiated by the Lipid-PI initiator under Mn 2 (CO) 10 and visible light radiation at room temperature to efficiently prepare LPCs. The 1 H-NMR results revealed that the diacylglycerol moiety resided at the terminal position of the LPCs molecular chain. Through dynamic light scattering and transmission electron microscopy techniques, it was found that the Lipid-POF (POF is defined as poly(OEGMA- co -FluMA)) prepared from OEGMA monomers can self-assemble into spherical micelles with a particle size of approximately 80 nm in pure water. Furthermore, the in vitro bioassay results illustrate that the prepared Lipid-POF not only can successfully modify the L929 cell surface but also has good biocompatibility. Overall, this study not only provides a fast and efficient method for synthesizing LPCs but also has broad application potential in the biomedical field.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2025
·
IF 2.8
Feijing Xu,Nian Yin,Shanjun Gao,Chunhui Shen
Ammonium polyphosphate (APP) and intumescent flame-retardant di-(3-amin-opropyltriethoxysilane) spirocyclic pentaerythritol diphosphate (PDAP) were prepared as an intumescent flame retardant with synergistic effect, and polylactic acid (PLA) was modified by melt blending. The flame retardancy of PLA/PDAP/APP was evaluated by limiting oxygen index (LOI), vertical combustion test (UL-94), and cone calorimetry test (CCT), and the thermal stability of PLA/PDAP/APP was studied by thermogravimetric analysis and thermogravimetry-Fourier transform infrared spectroscopy (FTIR). The possible flame-retardant mechanisms of PLA/PDAP/APP were analyzed based on the results of laser Raman spectroscopy and FTIR. When PDAP:APP = 2:1 and the addition amount of PDAP/APP is 20 wt%, the LOI value of PLA/IFR-modified material is as high as 43%, and the UL-94 test reaches V-0 level, and in the CCT, the PHRR and THR of PLA/PDAP/APP (2:1)-modified material are reduced by 80.7% and 76.8%, respectively, compared with pure PLA, and the carbon residue is as high as 62.01%. The results show that the compound APP/PDAP has an excellent flame-retardant effect on PLA, which provides a good research case for PLA flame-retardant-modified plastic materials.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2024
·Vol. 141
·期 27
·e55589
·
IF 2.7
Yaqin Zhao,Yangdong Liu,Haoning Zhao,Zhenbin Chen
In this paper, a novel polymeric antistatic agent, TMQ, with excellent antistatic properties, low cost, and good compatibility with polypropylene (PP), was prepared from isopentenyl polyoxyethylene ether (TPEG), maleic anhydride (MAH) and homemade quaternary ammonium salt (QAS). The structure is characterized using FTIR and 1 H NMR. How the addition of TMQ and the molar ratio of TPEG, QAS, and MAH affect the antistatic, mechanical, and crystalline properties of PP are investigated. The results show that as the feed ratio of TPEG, MAH and QAS is TPEG:MAH:QAS = 1:8:8, the modified PP displays the best overall performances. Further exploring finds out when TMQ is added at 15 wt%, the surface resistivity of PP reduces to 6.78 × 10 9 Ω/sq and the volume resistivity of PP reduces to 7.9 × 10 9 Ω cm −1 , the notched impact strength and melt index improve by 357% and 991%, respectively, while the tensile strength decreases by 38.6% compared with that of pure PP. Besides, the crystal study shows after TMQ is added, the crystallinity of PP reduces, the melt peak temperature remains essentially unchanged, and the crystallization peak temperature increases slightly. The material has excellent antistatic resistance to washing and durability, and the changes in relative humidity have little effect on its antistatic properties.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2024
·Vol. 141
·期 34
·e55859
·
IF 2.7
Jian Wu,Shihao Zhou,Kai Lv,Wu Zhang,Yi Zhang,Hang Li,Dong Ma
Uncontrollable bleeding caused by accidental severe trauma and organ operation severely affects people's life safety, even leading to death. Therefore, it is important to cease the bleeding quickly and effectively. Here, we report a rapid photocrosslinking hydrogel (DP-F127 hydrogel) based on F127 and acrylate functional motifs for in situ emergency hemostasis. The acrylate groups in DP-F127 can be cross-linked within 10 s by UV irradiation. The resulted hydrogels exhibit excellent mechanical properties, biocompatibility, and rapid hemostatic ability. The in vivo studies on the DP-F127 hydrogel demonstrated that liver bleeding could be rapidly repaired and show significantly less blood loss than commercially available dressing (Gelatin sponge, GS). This study provides a new paradigm for developing a hemostatic hydrogel with the rapid speed of crosslinking for in situ emergency hemostasis.
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高影响因子
危险品化学品经营许可证（带存储）