Article
Polymer Science
Anna K. Zykova, Petr V. Pantyukhov, Elena E. Mastalygina, Christian Chaverri-Ramos, Svetlana G. Nikolaeva, Jose J. Saavedra-Arias, Anatoly A. Popov, Sam E. Wortman, Matheus Poletto
Summary: Biocomposite films based on polyethylene and lignocellulosic fillers show potential for biodegradation, with higher rates in warmer climates.
Article
Materials Science, Multidisciplinary
Tong Wei, Xin Yang, Yuna Huo, Xue Jia, Weidong Shan, Weihong Wang
Summary: In this study, a flame retardant system was developed for wood plastic composite (WPC) by combining ammonium polyphosphate (APP) with lignin (L). The optimal ratio of L/APP was determined and the distribution of the flame retardant system in the WPC was analyzed. The concentrated distribution of the flame retardant system in the surface layer of the WPC showed improved flame retardant performance and maintained better mechanical properties.
MATERIALS CHEMISTRY AND PHYSICS
(2022)
Article
Biochemistry & Molecular Biology
Arne Schirp, Jan Dannenberg
Summary: This study investigated the fire performance of thermoplastic profiles made of high-density polyethylene, wheat straw particles, and fire-retardants before and after artificial weathering. The results showed that fire-retardants can reduce the heat release rate significantly, but there was a slight decrease in fire performance after weathering. The influence of weathering on fire behavior was found to be small compared to the difference between fire-retarded and non-fire-retarded materials.
Article
Polymer Science
Nabil Hayeemasae, Cao Xuan Viet, Abdulhakim Masa, Raa Khimi Shuib, Hanafi Ismail, Indra Surya
Summary: This study developed a novel thermoplastic elastomer (TPE) using recycled high-density polyethylene (rHDPE) and natural rubber (NR) with kenaf fibre as a sustainable filler. The addition of kenaf fibre significantly improved the retention properties of the composites after natural weathering. This makes kenaf fibre a potential filler or natural anti-degradant for plastic manufacturers.
Article
Polymer Science
Atta Ur Rehman Shah, Abdul Jalil, Atiya Sadiq, Meshal Alzaid, Muhammad Shoaib Naseem, Rakan Alanazi, Sultan Alanazi, Abdullatyf Obaid Alanzy, Ibrahim Hotan Alsohaimi, Rizwan Ahmed Malik
Summary: Given the increasing consumption of plastic products, it is crucial to prioritize plastic recycling in order to reduce plastic waste and environmental pollution. This research focuses on assessing the impact of adding rice husk and wood flour to recycled high-density polyethylene (rec-HDPE) on its mechanical properties, flammability, and thermal stability. The study found that incorporating rice husk and wood flour improved the mechanical strength and fire-retardant attributes of recycled HDPE.
Article
Polymer Science
Yi Gong, Sheng-Hui Wang, Zi-Yu Zhang, Xiao-Lei Yang, Zhen-Guo Yang, Hui-Gu Yang
Summary: The study conducted a long-term natural weathering test on PE100 class high-density polyethylene pipes exposed to sunlight for up to 24 months, investigating the aging process and mechanism. The results showed that the natural weathering test is the optimal method for evaluating material performance degradation.
POLYMER DEGRADATION AND STABILITY
(2021)
Article
Chemistry, Analytical
Ki-Bum Park, Joo-Sik Kim
Summary: In this study, a new TG-FTIR method was used to predict the pyrolysis products of LDPE, PP, PS, PET, and municipal plastic waste at different temperatures. The results showed that the pyrolysis products of LDPE and PP were primarily wax at 500°C. As the temperature increased, the production of light hydrocarbons increased, while the wax content decreased. Benzene and toluene formations were observed at temperatures above 800°C and 700°C for LDPE and PP, respectively. PS produced primarily styrene as the major component at 500-800°C, but with increasing temperature, the formations of alkenes, benzene, and toluene increased. PET produced mainly CO2 and CO as pyrolysis vapors, and the FT-IR spectra remained almost unchanged above 600°C. The product distribution of municipal plastic waste was similar to that of LDPE and PP. The new TG-FTIR method proved to be an effective tool for predicting pyrolysis products, especially gases with low molecular weights.
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
(2023)
Article
Agronomy
Xiaoyong Li, Zhen Li, Yan Xie, Bo Wang, Jie Kuai, Guangsheng Zhou
Summary: Plant density and rice-straw returning have effects on oilseed rape yield and lodging resistance. Low density and low straw returning can improve seedling survival rate, while high density and high straw returning increase seed number and reduce lodging index.
FIELD CROPS RESEARCH
(2021)
Article
Polymer Science
Tahsin Zaman, Lillian Mambiri, Peyman Nikaeen, Joelle A. Chauhan, Dilip Depan, Ahmed Khattab, William M. Chirdon
Summary: This study characterizes thermosetting shape memory polymers (TSMPs) under artificial weathering conditions including UV irradiation and cyclic condensation. The results show that crosslinking in UV-irradiated samples increases the glass transition temperatures, while cyclic condensation decreases them. Similarly, UV-irradiated samples experience an increase in elastic modulus and hardness, while cyclic condensation samples show a decrease in these properties with exposure time. UV-irradiated samples have better stress recovery and smaller surface cracks, whereas UV-condensation weathered samples have better shape recovery.
POLYMER DEGRADATION AND STABILITY
(2023)
Article
Environmental Sciences
Nuria Fernandez De Villalobos, Maria Clara Costa, Isabel Marin-Beltran
Summary: The study assessed the biodegradability of low-density polyethylene and biobased polyethylene terephthalate microplastic films by a consortium of marine bacteria, demonstrating signs of biodegradation in both types of plastics, especially in samples inoculated with bacteria.
MARINE POLLUTION BULLETIN
(2022)
Article
Polymer Science
Huicheng Xu, Mengyuan Dun, Zhengqi Zhang, Lei Zhang, Weidong Shan, Weihong Wang
Summary: A new method of preparing straw-reinforced LLDPE composites using waste plastic film and straw was developed to reduce pollution. The new method improved the physical and mechanical properties of the composites, and the combination of straw and LLDPE formed a dense composite material with excellent interfacial bonding.
Article
Nuclear Science & Technology
Hanan Al-Ghamdi, Khaled Farah, Aljawharah Almuqrin, Faouzi Hosni
Summary: A reliable and well-characterized dosimetry system is crucial for quality assurance in radiation processing. This study focuses on the dosimetric characteristics of a commercialized high-density polyethylene film using Fourier transformed infrared spectrometry (FTIR). The study establishes correlations between absorbed dose and radiation induced infrared absorption, and finds that polyethylene dose-response is linear and affected by irradiation conditions.
NUCLEAR ENGINEERING AND TECHNOLOGY
(2022)
Article
Materials Science, Characterization & Testing
Rafael Juan, Beatriz Paredes, Rafael A. Garcia-Munoz, Carlos Dominguez
Summary: This study investigates quantitative analysis methods for polypropylene impurities in recycled high-density polyethylene. It finds that Temperature Rising Elution Fractionation (TREF) is more accurate in identifying and quantifying PP impurities, reducing underestimation of PP content compared to Differential Scanning Calorimetry (DSC).
Article
Multidisciplinary Sciences
Yingxuan Miao, Yunxuan Zhao, Geoffrey I. N. Waterhouse, Run Shi, Li-Zhu Wu, Tierui Zhang
Summary: Researchers have developed a photothermal catalytic recycling system that can convert polyolefin plastics into liquid/waxy fuels. By using concentrated sunlight or xenon lamp irradiation, polyolefin plastics are heated, resulting in the hydrogenolysis of the C-C and C-H bonds in the polymer chains, leading to the complete conversion of waste polyolefins into valuable liquid fuels. This work demonstrates a simple and efficient strategy for recycling waste polyolefin plastics using abundant solar energy.
NATURE COMMUNICATIONS
(2023)
Article
Thermodynamics
Justyna Kuczek, Magdalena Szumera, Dorota Rutkowska-Zbik, Mariusz Gackowski, Justyna Sulowska
Summary: This study focused on the preparation and characterization of multicomponent cobalt phosphate-silicate glasses and the investigation of the influence of cobalt ions on the glass structure. The induced crystallization experiment revealed that the crystallization temperature was correlated with the formed crystalline phases. Data related to different parameters were obtained through techniques such as infrared spectroscopy. This research is of significance for further exploration of cobalt phosphate-silicate glasses and the understanding of the phosphate glass family.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2023)
Review
Chemistry, Applied
Xingran Kou, Dongdong Su, Fei Pan, Xiwei Xu, Qingran Meng, Qinfei Ke
Summary: This review provides a systematic discussion of the application of molecular dynamics (MD) simulations in aroma compounds (ACs)/cyclodextrins (CDs) inclusion complexes (ICs). It covers the establishment of the simulation process, parameter selection, model evaluation, and various application cases, summarizing the major achievements and challenges of this method.
CARBOHYDRATE POLYMERS
(2024)
Review
Chemistry, Applied
Haoyu Yu, Quanbin Zhang, Ammad Ahmad Farooqi, Jing Wang, Yang Yue, Lihua Geng, Ning Wu
Summary: Brown algae are rich in fucoidan, which has been found to have anti-cancer and anti-metastasis effects. Fucoidan inhibits tumor cell growth, proliferation, and metastasis, and also promotes immune responses in the tumor microenvironment.
CARBOHYDRATE POLYMERS
(2024)
Review
Chemistry, Applied
Liang Dong, Yanan Li, Hailin Cong, Bing Yu, Youqing Shen
Summary: Gene therapy is a revolutionary treatment that requires suitable vectors for protecting and releasing exogenous nucleic acids in target cells. Chitosan, as a non-viral vector, has gained attention due to its good biocompatibility and ability to load large amounts of nucleic acids. This paper summarizes the potential of chitosan and its derivatives as gene delivery vector materials, discusses factors influencing transfection efficiency, performance evaluation, ways to optimize infectious efficiency, and current research development directions. It also provides an outlook on the future prospects of chitosan.
CARBOHYDRATE POLYMERS
(2024)
Article
Chemistry, Applied
Ana Iglesias-Mejuto, Beatriz Magarinos, Tania Ferreira-Goncalves, Ricardo Starbird-Perez, Carmen Alvarez-Lorenzo, Catarina Pinto Reis, Ines Ardao, Carlos A. Garcia-Gonzalez
Summary: This study developed a novel processing strategy to manufacture drug-loaded and personalized aerogels with nanostructures. The aerogels demonstrated bioactivity and antimicrobial effects, promoting bone regeneration and preventing infections in bone tissue engineering.
CARBOHYDRATE POLYMERS
(2024)
Article
Chemistry, Applied
Zhenxu Shi, Dimei Yang, Yan Zhou, Xinyu Chen, Lin Gan, Jin Huang
Summary: This study proposes a micro-assembly method to improve the photoluminescent properties of crystalline cellulose nanocrystals (CNCs) by organizing them within a sub-micrometer-sized metal-organic framework and coating with TiO2. The TiO2 coating prevents CNC assembly breakdown and allows information to be revealed using screenprinted labels for anti-counterfeiting purposes.
CARBOHYDRATE POLYMERS
(2024)
Article
Chemistry, Applied
Xuejiao Liu, Bin Fu, Jierong Chen, Zhenyu Sun, Dongdong Zheng, Zhonghua Li, Bing Gu, Ying Zhang, Haojie Lu
Summary: Liver disease is a major cause of global mortality, and identifying biomarkers for diagnosing its progression is crucial for improving outcomes. Targeted mass spectrometry is a powerful tool for verifying biomarker candidates and clinical applications, particularly for glycoproteins translation. However, the limitation of analyzing only one sample per run has become apparent. In this study, a high-throughput intact N-glycopeptides quantification strategy was developed, allowing the validation of 20 samples per run with an average analysis time of 3 minutes per sample. The strategy was applied in a cohort of 461 serum samples and identified a panel of 10 IgG N-glycopeptides that have strong clinical utility in evaluating the severity of liver disease.
CARBOHYDRATE POLYMERS
(2024)
Article
Chemistry, Applied
Qian Wang, Hao Jiang, Hongli Zhang, Weiqiao Lu, Xiao Wang, Wenfeng Xu, Jia Li, Youjing Lv, Guoyun Li, Chao Cai, Guangli Yu
Summary: This study proposes a novel strategy of antibody-beta-glucan conjugates (AGC) to enhance the antitumor immune response to immune checkpoint blockade (ICB) therapy. AGC demonstrated powerful tumor suppression and promoted interaction between tumor cells and dendritic cells (DCs), thereby enhancing immunotherapeutic benefits.
CARBOHYDRATE POLYMERS
(2024)
Article
Chemistry, Applied
Chaeyeon Lee, Sojeong Lee, Sang Wook Kang
Summary: The study aims to enhance the properties of porous membranes by addressing the limitations associated with phase separation. By using cellulose acetate and citric acid, the researchers were able to fabricate membranes with improved mechanical strength and thermal stability. The cross-linking effect of citric acid resulted in a more uniform pore structure and higher porosity.
CARBOHYDRATE POLYMERS
(2024)
Review
Chemistry, Applied
Tejaswini Kolipaka, Giriraj Pandey, Noella Abraham, Dadi A. Srinivasarao, Rajeev Singh Raghuvanshi, P. S. Rajinikanth, Vidya Tickoo, Saurabh Srivastava
Summary: This review focuses on the design and application of polysaccharide-based hydrogel wound dressings, highlighting aspects such as biocompatibility, biodegradability, drug entrapment, moisturizing ability, swelling, and mechanical properties. Additionally, various crosslinking methods and recent developments in stimuli-responsive hydrogels are discussed.
CARBOHYDRATE POLYMERS
(2024)
Article
Chemistry, Applied
Anqi Xu, Nan Zhang, Shixing Su, Hongyu Shi, Daoqiang Lu, Xifeng Li, Xin Zhang, Xin Feng, Zhuohua Wen, Gengwu Ma, Mengshi Huang, Chi Huang, Yuqi Hu, Hao Yuan, Qinwen Liu, Daogang Guan, Jun Wang, Chuanzhi Duan
Summary: The study presents a one-pot radical polymerization method to fabricate a hydrogel with adhesive properties, which can effectively treat bacterial-infected diabetic wounds and accelerate wound healing.
CARBOHYDRATE POLYMERS
(2024)
Article
Chemistry, Applied
Montarop Yamabhai, Munthipha Khamphio, Thae Thae Min, Chai Noy Soem, Nguyen Cao Cuong, Waheni Rizki Aprilia, Krisanai Luesukprasert, Karsidete Teeranitayatarn, Atthaphon Maneedaeng, Tina R. Tuveng, Silje B. Lorentzen, Simen Antonsen, Paiboon Jitprasertwong, Vincent G. H. Eijsink
Summary: The study investigates the bioconversion of chitosan into soluble anti-inflammatory chitosan oligosaccharides (CHOS) using an enzyme. The results show that the generated CHOS have anti-inflammatory activity, but the magnitude of the activity depends on the substrate and production process. Different methods of dissolving chitosan also affect the properties of CHOS. The study highlights the importance of quality assurance in CHOS preparations.
CARBOHYDRATE POLYMERS
(2024)
Article
Chemistry, Applied
Wen Cao, Jiangping Wu, Xinya Zhao, Zixu Li, Jie Yu, Taili Shao, Xuefeng Hou, Lutan Zhou, Chunfei Wang, Guodong Wang, Jun Han
Summary: In this study, a water-soluble polysaccharide (PLP1) was successfully isolated and purified from Pueraria lobata. It was found that PLP1 was composed of specific glycosidic units and exhibited a better free radical-scavenging ability. Moreover, PLP1 effectively protected the liver against acute alcoholic liver disease (ALD) in mice.
CARBOHYDRATE POLYMERS
(2024)
Article
Chemistry, Applied
Ya Su, Yaqian Liu, Xueyan Hu, Yueqi Lu, Jinyuan Zhang, Wenbo Jin, Wang Liu, Yan Shu, Yuen Yee Cheng, Wenfang Li, Yi Nie, Bo Pan, Kedong Song
Summary: A 3D printed scaffold based on carbon dots-curcumin nano-drug release has been developed for drug delivery after breast cancer surgery. The scaffold showed effective inhibition of tumor growth, antibacterial activity, and promotion of wound healing, making it a promising approach for preventing tumor recurrence.
CARBOHYDRATE POLYMERS
(2024)
Article
Chemistry, Applied
Ekaterina Sokolova, Diane Jouanneau, Antonin Chevenier, Murielle Jam, Nathalie Desban, Pierre Colas, Elizabeth Ficko-Blean, Gurvan Michel
Summary: Carrageenans, a compound synthesized in red algae, have various biological properties and are valuable in the pharmaceutical and cosmetic industries. Their fine structure affects wound healing, oxidative processes, hemostasis, and inflammation. Enzymatic modification of carrageenans produces oligosaccharides that bind to natural human serum antibodies and specific antibodies, showing potential for therapeutic applications.
CARBOHYDRATE POLYMERS
(2024)
Article
Chemistry, Applied
Yan Shi, Miao Yu, Kaijin Qiu, Tiantian Kong, Chunjing Guo, Wenxue Zhang, Daquan Chen, Ming Kong
Summary: In this study, functionalized transfersomes were developed to co-deliver doxorubicin and 1MT towards primary tumors and tumor draining lymph nodes via transdermal administration using microneedles. The results showed that the nano-complexed microneedles exhibited a stronger suppression in tumor growth compared to the intravenous group.
CARBOHYDRATE POLYMERS
(2024)