Article
Materials Science, Composites
Femiana Gapsari, Mudjib A. Sulaiman, Thesya Marlia Putri, Hans Juliano, Ludfi Djakfar, Rinawati P. Handajani, Sugeng P. Budio, Pitojo T. Juwono, Praveenkumara Jagadeesh, Sanjay Mavinkere Rangappa, Suchart Siengchin
Summary: This study analyzed the influence of calcium carbonate filler loadings on the properties of pine fiber reinforced polyester composites. The results showed that the fillers improved the physical, mechanical, thermal, and morphological properties of the composites. The fillers enhanced the strength, hardness, and thermal resistance of the composites through filling air gaps and enhancing interfacial bonding.
POLYMER COMPOSITES
(2022)
Review
Polymer Science
D. N. Syuhada, A. R. Azura
Summary: In recent years, waste natural polymers have gained much attention as renewable, biodegradable, non-toxic, and low-cost fillers in polymer composites, due to the increasing awareness of the global environment. Various surface modification techniques have been applied to exploit the potential of residual natural loading in latex composites. This review focuses on the preparation and characterization of modified waste natural fillers for latex-based composites, exploring the potential of these fillers in terms of mechanical, thermal, biodegradability, and filler-latex interaction aspects for a more sustainable future.
Article
Dentistry, Oral Surgery & Medicine
Julissa Berto-Inga, Flor Santander-Rengifo, Marysela Ladera-Castaneda, Carlos Lopez-Gurreonero, Antonieta Castro Perez-Vargas, Alberto Cornejo-Pinto, Luis Cervantes-Ganoza, Cesar Cayo-Rojas
Summary: The surface microhardness of resin composites can be affected when handled with gloves, with Filtek One Bulk Fill and Opus Bulk Fill resin showing significant decreases when handled with latex or nitrile gloves. It is recommended to handle bulk-fill resin composites with a spatula to avoid adverse effects on their clinical performance.
INTERNATIONAL DENTAL JOURNAL
(2022)
Article
Nanoscience & Nanotechnology
Aastha Uppal, Wilson Kong, Ashish Rana, Robert Y. Wang, Konrad Rykaczewski
Summary: By synergistically combining solid silver and liquid metal fillers, adjusting the viscosity of the matrix oil, and compressing the samples, the physical barriers of liquid metal microdroplets can be overcome, resulting in improved thermal conductivity of the composite materials.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Environmental Sciences
Gamze Dogdu Okcu, Everett Eustance, YenJung Sean Lai, Bruce E. Rittmann
Summary: The study investigated the competition or co-existence of diatom Chaetoceros gracilis and coccolithophore Pleurochrysis Carterae in laboratory conditions. Results showed that monoculture of C. gracilis had higher growth rate and productivity compared to P. carterae. Co-culture resulted in a slower growth rate for P. carterae, with no significant impact on pigment production. Ash content increased at lower silicate concentrations, with SiO2 being the dominant component.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Chemistry, Physical
Jing Zhou, Dajun Hou, Sha Cheng, Jisong Zhang, Wen Chen, Ling Zhou, Pengchao Zhang
Summary: PVDF-based composites play a crucial role in advanced dielectric energy storage due to their exceptional flexibility, high dielectric permittivity, low density, and superior dielectric breakdown strength. The energy storage performance can be significantly enhanced by optimizing the dispersion and alignment of fillers in the PVDF matrix. This review summarizes recent developments in PVDF-based composites for advanced dielectric capacitors, with a focus on the surface modification of fillers to improve their dispersion and the alignment of one-dimensional and two-dimensional fillers to strengthen the dielectric breakdown strength. The challenges and future prospects of PVDF-based composites for advanced dielectric capacitors are also discussed.
MATERIALS TODAY ENERGY
(2023)
Article
Polymer Science
Huiguang Bian, Tianhao Chang, Chuansheng Wang, Donglin Zhu, Donghui Ren, Xiao Yao, Zhuang Tao
Summary: By improving the latex compounding process, natural rubber latex/silica composites prepared using the A-HTS method showed better tensile strength, rolling resistance, and wet-skid resistance. Compared to the other three methods discussed, A-HTS technology exhibited superior filler dispersion in rubber compounds.
Article
Engineering, Chemical
Yao Xiao, Lizhi Yan, Zhenchun Xu, Zhihua Sui, Junxiu Xue, Donglin Zhu, Huiguang Bian, Chuansheng Wang
Summary: This study proposes a method that combines foaming pre-dispersion technology with gas-phase-assisted spray technology and introduces potassium oleate as a foaming agent. This method can improve the dispersion of the filler, achieve chemical bridging, and reduce the loss of non-rubber components through instant drying, thus improving the preparation efficiency and comprehensive properties of the masterbatch.
POLYMER ENGINEERING AND SCIENCE
(2022)
Article
Materials Science, Ceramics
Yuanying Yu, Dajun Hou, Jingjing Zhou, Jie Shen, Pengchao Zhang, Wen Chen, Jing Zhou
Summary: Incorporating low CTE inorganic fillers into PTFE matrix can effectively reduce thermal expansion mismatch and improve the dielectric properties of CCL. This study synthesized core@shell structured SiO2@polydopamine fillers and incorporated them into PTFE to form SiO2@PDA/PTFE composites. The presence of PDA shell improved dispersion and interfacial interaction, resulting in reduced CTE and limited sacrifice in dielectric properties compared to SiO2/PTFE composites.
CERAMICS INTERNATIONAL
(2023)
Article
Materials Science, Composites
Zewei Gong, Juncheng Huang, Liangke Xie, Chengqi Feng, Haining Na, Na Wang, Jin Zhu
Summary: In this study, high-performance composite materials were prepared using reed and wheat straw as biomass fillers and poly(butyleneadipate-co-terephthalate) as matrix, and their enzymatic degradation was researched. The water absorption of biomass fillers promoted the degradation of the PBAT matrix, leading to a decrease in the mechanical properties of the composites.
POLYMER COMPOSITES
(2023)
Article
Engineering, Electrical & Electronic
Song Jingxuan, Xie Qing, Lu Xiuquan, Zhu Meiying, Zhang Yahui, Lv Fangcheng
Summary: In this study, dopamine and silane coupling agents were used to treat aramid fiber powder, and the treated fiber powder was combined with epoxy resin to form a composite material. The results showed that the treated composite material had higher breakdown strength and volume conductivity, as well as lower interface charge attenuation rate and volume conductivity.
IEEE TRANSACTIONS ON DIELECTRICS AND ELECTRICAL INSULATION
(2023)
Article
Materials Science, Characterization & Testing
Wei Miao, Wenxi Cheng, Weiqiang Song
Summary: This study prepared polylactide (PLA)/wood flour (WF)/calcium carbonate (CC) composites with different content of poly(maleic anhydride -co- vinyl acetate) (PMAVA). The addition of PMAVA improved the torque balance of PLA/WF/CC composites as shown by the torque-time curves. SEM photographs showed enhanced compatibility and interfacial adhesion between the filler (CC or WF) and PLA after the addition of PMAVA. DSC heating curves indicated that WF and CC had unrelated effects on the crystal of PLA, and the presence of PMAVA decreased the crystal integrity of PLA. The tensile test results demonstrated increased tensile strength and modulus with the addition of PMAVA, and the composite with 0.5 wt% PMAVA showed the best tensile performance. Hydrolysis results indicated that low content of PMAVA in the composite improved its hydrolysis rate.
Article
Polymer Science
Weijiang Wang, Yinmin Zhang, Yongfeng Zhang, Junmin Sun
Summary: This study investigated the effects of activated calcium silicate (ACS) content and particle size on the properties of natural rubber (NR) composites. It was found that lower ACS particle sizes and higher ACS content promoted vulcanization and improved the strength of the composites, while excessive ACS content led to agglomeration. Optimal performance was achieved at a specific ACS particle size and loading, enhancing both the strength of NR and the utilization of ACS waste.
JOURNAL OF POLYMER RESEARCH
(2022)
Article
Engineering, Chemical
Jia-Hong Niu, Tai-Bao Yang, Xin-Yuan Li, Ling Xu, Hao Lin, Gan-Ji Zhong
Summary: In this study, continuous thermoplastic polyurethane (TPU) scaffolds were constructed using 3D printing technology, and co-continuous segregated carbon nanotube (CNT)/TPU composites were successfully fabricated through CNT dip-coating and hot-pressing. The composites exhibited high EMI shielding properties and excellent mechanical properties, which could promote their practical application.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2023)
Article
Chemistry, Physical
Haiying Li, Shishuai Sun, Wen Cui, Xiaolan Li, Chuanjia Kou, Zhihui Xu, Zhihui Zhang
Summary: Reasonably regulating the dimensionality and interface of an electrode material can effectively improve its performance in surface chemical reactivity, charge transfer rate, and ion transport, solving problems with supercapacitors such as low energy density and poor cycle stability. A two-stage process was used to generate a multidimensional hybrid morphology of Co-Fe carbonate hydroxide (CH) coupled with Co-Mn layered double hydroxide (LDH) directly on a nickel foam substrate. The resulting multidimensional hybrid materials with a pore morphology containing 1D nanorods, 2D nanosheets, and 3D porous coral ensure sufficient contact between the electrolyte and electrode material, enhancing charge transfer and ion diffusion. The heterojunction surface's strong coupling effect of Co, Fe, and Mn metals produces various ionic valence states and high conductivities, increasing redox activity and improving electrochemical performance. In tests, the supercapacitor exhibited excellent cycle stability and an energy density of 0.723 mWh cm-2, making it suitable for driving small electrical appliances.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)