Matéria (Rio de Janeiro), Год журнала: 2024, Номер 29(4)
Опубликована: Янв. 1, 2024
Язык: Английский
ACS Sensors, Год журнала: 2024, Номер 9(8), С. 3848 - 3863
Опубликована: Июль 24, 2024
Flexible piezoresistive sensors are in high demand areas such as wearable devices, electronic skin, and human-machine interfaces due to their advantageous features, including low power consumption, excellent bending stability, broad testing pressure range, simple manufacturing technology. With the advancement of intelligent technology, higher requirements for sensitivity, accuracy, response time, measurement weather resistance emerging. Due designability polymer porous materials conductive phases, with more multivariate combinations, it is possible achieve sensitivity lower detection limits, which promising than traditional flexible sensor materials. Based on this, this work reviews recent advancements research utilizing Furthermore, review examines performance optimization development from perspectives three-dimensional substrate regulation, sensing material selection composite structure design.
Язык: Английский
Процитировано
23
Green Chemistry, Год журнала: 2021, Номер 23(22), С. 8725 - 8753
Опубликована: Янв. 1, 2021
Lignin is an inexpensive raw material that can be utilised in polymer industry. This review critically appraises the recent progress and provides framework for future developments lignin valorisation into rigid polyurethane foam.
Язык: Английский
Процитировано
62
Journal of Bioresources and Bioproducts, Год журнала: 2024, Номер 9(2), С. 160 - 173
Опубликована: Янв. 24, 2024
Biofoam products have attracted considerable attention lately because there is a growing demand for green/sustainable products. To this end, various biobased foams either been developed or are currently in development, e.g., bio-based polyurethanes (PUs), polylactic acid (PLA), starch, and polyhydroxyalkanotates (PHAs). Indeed, significant progress has made; however, challenges still persist, example, foam poor processability, inferior compatibility, thermal strength properties. In review, we focus on five biofoam products: namely PUs, PLA, PHAs, cellulose products, along with their properties performance, as well manufacturing processes. Further efforts needed to unlock the full potential of these meet goal complementing gradually replacing some fossil-based counterparts. Finally, challenges, arising opportunities future research directions discussed.
Язык: Английский
Процитировано
18
Construction and Building Materials, Год журнала: 2024, Номер 447, С. 138068 - 138068
Опубликована: Сен. 2, 2024
Язык: Английский
Процитировано
12
Construction and Building Materials, Год журнала: 2024, Номер 417, С. 135329 - 135329
Опубликована: Фев. 1, 2024
Язык: Английский
Процитировано
10
Polymer, Год журнала: 2024, Номер 298, С. 126831 - 126831
Опубликована: Фев. 28, 2024
Язык: Английский
Процитировано
9
Journal of Polymer Research, Год журнала: 2023, Номер 30(2)
Опубликована: Янв. 25, 2023
Язык: Английский
Процитировано
15
Polymers, Год журнала: 2021, Номер 13(24), С. 4276 - 4276
Опубликована: Дек. 7, 2021
This paper presents research into the preparation of rigid polyurethane foams with bio-polyols from rapeseed and tall oil. Rigid were designed a cryogenic insulation application for aerospace in mind. The systems containing non-renewable diethylene glycol (DEG) modified by replacing it oil-based low functional polyol (LF), obtained two-step reaction epoxidation oxirane ring opening 1-hexanol. It was observed that as proportion LF system increased, so too did apparent density foam material. An increase value thermal conductivity coefficient associated an density. Mechanical tests showed had higher compressive strength at temperatures compared values room temperature. adhesion test indicated subjected to cryo-shock similar materials not this test. results than 0.1 MPa, which is favourable low-temperature applications.
Язык: Английский
Процитировано
32
Journal of Elastomers & Plastics, Год журнала: 2024, Номер 56(4), С. 454 - 468
Опубликована: Апрель 3, 2024
Canola oil can serve as a substitute for polyol in the production of eco-friendly polyurethane. The aim this study is to investigate optimal conditions epoxidation canola via Taguchi optimization method. To date, there no published work on process parameters epoxidized using In study, was performed situ-generated peracetic acid. Peracetic acid formed by reaction between acetic and hydrogen peroxide presence catalyst. highest conversion oxirane 85% achieved at ratio 2:1 oil, temperature 65°C, stirring speed 400 rpm. Fourier-transform infrared spectroscopy (FTIR) characterization reveals ring group, identified wavenumber 1150 cm −1 . Employing particle swarm numerical simulations, results exhibit excellent agreement with experimental data, thereby confirming accuracy validity kinetic model.
Язык: Английский
Процитировано
3
Biomolecules, Год журнала: 2025, Номер 15(5), С. 680 - 680
Опубликована: Май 7, 2025
Polyurethanes (PUs) are extremely versatile materials used across different industries. Traditionally, they synthesized by reacting polyols and isocyanates, both of which petroleum-derived reagents. In response to the demand for more eco-friendly materials, research has increasingly focused on developing new routes PU synthesis using renewable feedstocks. While substituting isocyanates remains a greater challenge, replacing fossil-based with bio-based alternatives is now promising strategy. This review explores main natural sources their transformations into bio-polyols, incorporation bio-fillers formulations, production non-isocyanate polyurethanes (NIPUs). Additionally, study summarizes growing body that reported successful outcomes bio-polyols in foams distinct applications.
Язык: Английский
Процитировано
0