Results 71 to 80 of about 55,057 (301)

Production of PBT(polybutylene terephthalate) Oligomer from Recycled PET(polyethylene terephthalate)

Korean Chemical Engineering Research, 2016
재활용 PET (Poly ethylene terephthalate)로부터 PBT (Poly butylene terephthalate)를 생산할 수 있는 새로운 방법을 모색하였다. 이 방법은 PET와 BD (1,4-butanediol)의 에스테르 교환반응을 통하여 BHBT (Bishydroxybutylterephthalate)올리고머를 생성하는 글리콜리시스 반응과 BHBT의 축합 중합 반응을 통하여 PBT 올리고머를 생성하는 축중합 반응으로 이루어져 있다. 이를 통해 단기 수명 주기 제품인 버려지는 PET 페자원을 장기 수명 주기 제품인 PBT로 변환시켜 더 가치 있고 바람직한 재활용을 하고자 하였다.
Minjeong Cho, Jeongin Yang, Seunghyun Noh, Hongjae Joe, Myungwan Han   +4 more
openaire   +2 more sources

The influence of draw ratio on morphology and thermal properties of MFCs based on PP and PET [PDF]

, 2016
The main goal of this study is to investigate the influence of draw ratio on morphology and properties in microfibrillar composites (MFCs). In situ MFCs based on polypropylene (PP) and poly(ethylene terephthalate) (PET) have been prepared at the weight ...
Cardon, Ludwig, Delva, Laurens, Kuzmanović, Maja, Ragaert, Kim, Vanderbauwhede, Sem   +4 more
core   +1 more source

Fluoride‐Free Adhesives for Low Surface Energy Fluorinated Substrates

Advanced Functional Materials, EarlyView.
A universal, fluoride‐free adhesive achieves a record 4.91 MPa bond strength on PTFE by leveraging amine/amide dipole–dipole interactions, without fluorinated components. This sustainable strategy overcomes the environmental and performance limits of PFAS‐based adhesives, enabling robust, eco‐conscious bonding across diverse materials.
Siqi Zheng, Yifeng Sheng, Shiqian Tan, Yuxuan Sun, Linling Li, He Zhu, Qi Zhang, Shiping Zhu   +7 more
wiley   +1 more source

Computer simulation and study of the IR spectra of irradiated polymer materials [PDF]

, 2002
Within the framework of MDDP the calculations of IR spectra have been performed for the initial polyethylene terephthalate (PET) and its state with the cation which satisfactorily describing experimental data.
V Z Gabdrakipov, A A Kupchishin, A I Kupchishin, K B Tlebaev, V A Gyngazov, Charlesby A, Smith A A, Bellamy L, Tarutino L I, Hummel D O, Tlebayev K B, Tarasevich BN, Takahashi S   +12 more
core   +1 more source

Membrane Wrapping for High Capacity and Rapidly Switchable Adhesives

Advanced Functional Materials, EarlyView.
A membrane‐wrapping mechanism enables high‐capacity, rapidly switchable adhesion by coupling suction, friction, and adhesion. Broadband performance is achieved in dry and underwater conditions, allowing fast, reversible manipulation of objects of diverse sizes and shapes, from delicate eggs and berries to flat, complex, or heavy objects. These outcomes
Yeunhee Kim, Camryn A. Mills, Michael D. Bartlett   +2 more
wiley   +1 more source

Utilization of Waste Plastic Water Bottle as a Modifier For Asphalt mixture Properties

Journal of Engineering and Sustainable Development, 2015
Utilization of waste material in asphalt pavement would be beneficial in order to find an alternative solution to increase service life of asphalt pavement and reduce environmental pollution as well.
Khalid Mershed Awaeed , Besma Mohammed Fahad, Dalia Adil Rasool   +2 more
doaj  

Waveguide propagation of light in polymer porous films filled with nematic liquid crystals

, 2019
We theoretically analyze the waveguide regime of light propagation in a cylindrical pore of a polymer matrix filled with liquid crystals assuming that the effective radial optical anisotropy is biaxial. From numerical analysis of the dispersion relations,
Chopik, A. P., Dubtsov, A. V., Kiselev, Alexei D., Pasechnik, S. V., Semerenko, D. A., Shmeliova, D. V.   +5 more
core   +1 more source

Transparent UV‐Curable Self‐Sanitizing Coatings Applicable to Diverse Surfaces and High‐Touch Screens to Mitigate Deadly Pathogen Transmission

Advanced Functional Materials, EarlyView.
Development of a transparent, self‐sanitizing antimicrobial coating technology applicable to a wide range of materials and surfaces‐including touchscreens, transparent substrates, and metal, plastic, and glass‐regardless of pathogen type. The spray‐coated, UV‐cross‐linked imidazole‐based quaternary ammonium chloride materials provide broad‐spectrum ...
Surjith Kumaran, Sumin Han, Euna Oh, Chunghee Jo, Hyerin Shin, Dae‐Hong Ko, Hyo‐Jick Choi   +6 more
wiley   +1 more source

The Effect of Injection Moulding Temperature on PET Particles/Fibrils in Blends and MFCs [PDF]

, 2016
The microfibrillar composites of polypropylene (PP)/poly(ethylene terephthalate) (PET) have been prepared by twin-screw extrusion, followed by cold drawing. The employed stretch ratio was 4.
Cardon, Ludwig, Delva, Laurens, Kuzmanović, Maja, Ragaert, Kim   +3 more
core   +1 more source

Counterion Dependent Side‐Chain Relaxation Stiffens a Chemically Doped Thienothiophene Copolymer

Advanced Functional Materials, EarlyView.
Oxidation of a thienothiophene copolymer, p(g3TT‐T2), via different doping strategies and dopant molecules resulted in materials with similar oxidation levels and a high electrical conductivity of ≈100 S cm−1. However, mechanical properties varied significantly, with sub‐glass transition temperatures and elastic moduli spanning from –44°C to –3°C and ...
Mariavittoria Craighero, Meghna Jha, Elsa Veronica Flores‐Vela, Joost Kimpel, Andreas Schaefer, Jiali Guo, Jesika Asatryan, Alberto Peinador Veiga, Shuichi Haraguchi, Per‐Anders Carlsson, Jaime Martín, Mariano Campoy‐Quiles, Christian Müller   +12 more
wiley   +1 more source