Results 101 to 110 of about 18,886 (286)

Prospect for pico-hydropower generation from 3D printed Polyethylene Terephthalate Glycol (PETG) Polymer: A Case Study in Pusu River, Malaysia

Case Studies in Chemical and Environmental Engineering
In Malaysia, rural communities rely on fossil fuel-powered generators for electrification. A small-scale Archimedean Screw Turbine (AST) can be utilized to generate pico-hydropower for potential clean energy generation.
Nuranisa Suhada binti Abd Rahim, Chuan Choong Yang, Nor Aiman Sukindar   +2 more
doaj   +1 more source

Polyester Polyols from Waste PET Bottles for Polyurethane Rigid Foams [PDF]

, 2003
This paper describes a modified process to produce polyester polyols from PET wastes derived from the “bottle fraction residue” of the German Dual System (DSD) [11] employing a waste oligoester condensate of the polyesterification process with the ...
Behrendt, Gerhard, Evtimova, Rozeta, Lozeva, Yordanka, Schmidt, Karl-Heinz, Wagner, Peter, Wotzka, Michael   +5 more
core   +1 more source

Nonisothermal crystallization behavior, and morphology of poly(trimethylene terephthalate)/polyethylene glycol copolymers

Polymer Testing, 2012
Abstract Poly(trimethylene terephthalate)/polyethylene glycol (PTT/PEG) copolymers, with PEG content ranging from 27.2 to 47.4 wt%, were synthesized by melt copolycondensation. Wide-Angle X-ray diffractometer revealed that all copolymers had the same crystal structure of homo-PTT at room temperature. All copolymers could form ring-banded spherulites,
Zhenming Chen, Chenguang Yao, Guisheng Yang   +2 more
openaire   +1 more source

An All‐Soft Wearable Electrochemiluminescence Chip for Sweat Metabolite Detection

Advanced Science, EarlyView.
A wearable electrochemiluminescence chip for sweat metabolite monitoring is pioneered, integrating “all‐soft” components: a flexible closed bipolar electrode (c‐BPE) array based on laser‐induced graphene (LIG), a laser‐cut microfluidic layer for sweat collection, and deep eutectic solvents (DES)‐based conductive ionogels for ECL emission.
Wei Nie, Jie Jiang, Xi Wei, Linfeng Zhuo, Danyang Li, Mingyu Jia, Tianhua Zheng, Hua Cui   +7 more
wiley   +1 more source

From Plastic Waste to Pharmaceutical Precursors: PET Upcycling Through Ruthenium Catalyzed Semi-Hydrogenation. [PDF]

Angew Chem Int Ed Engl
We present a new catalytic process that converts real‐life PET waste into ethyl 4‐hydroxymethylbenzoate (EHMB), which serves as a valuable intermediate for the synthesis of pharmaceuticals, an insecticide, and a novel polyester. Abstract We report here the upcycling of PET (polyethylene terephthalate) waste via semihydrogenation to make ethyl 4 ...
Kulyabin PS, Luk J, Uslamin EA, Kolganov AA, Saini G, Marcial-Hernandez R, Pancholi K, Kühne B, Dauth A, McKay AP, Cordes DB, Pidko EA, Kumar A.   +12 more
europepmc   +3 more sources

Study of the morphology of semicrystalline poly(ethylene terephthalate) by hydrolysis etching [PDF]

, 1993
Semicrystalline poly(ethylene terephthalate) was hydrolysed in water at 180°C under elevated pressure and subsequently treated with ethanol, following the etching process first developed by Miyagi and Wunderlich.
Baltá Calleja, Francisco José, Cagiao, M. E., Vanderdonckt, C., Zachmann, H. G.   +3 more
core   +1 more source

Encapsulating Textiles with Dynamic Covalent Networks for Sustainable and Efficient Oil Spill Cleanup

Advanced Science, EarlyView.
By encapsulating industrially relevant fabrics with dynamic imine networks, we show that the resulting composites exhibit exceptional oil absorbtion capability and chemical recyclability. It is poised for sustainable oil spill cleanup. ABSTRACT The development of high‐performance sorbents for oil spill remediation is highly desirable, which now calls ...
Changyi You, Ping Yu, Haiyue Wang, Qirui Huang, Wei Hong, Cai Liu, Qinchao Sun, Yan Wang, Youwei Ma, Zuming Hu   +9 more
wiley   +1 more source

Structural integrity of custom-designed additive manufactured prosthetic sockets compared to traditional sockets

Results in Materials
Over the past decades, the number of patients with lower extremity amputation increased world-wide. The increasing rate of patients, particularly in developing countries, has led to limited access to clinics and services for prosthetic and orthotic care.
Sunjung Kim, Sai V. Yalla, Sagar Shetty, Noah J. Rosenblatt   +3 more
doaj   +1 more source

Studies of molecular properties of polymeric materials [PDF]

Aerospace environment effects (high energy electrons, thermal cycling, atomic oxygen, and aircraft fluids) on polymeric and composite materials considered for structural use in spacecraft and advanced aircraft are examined. These materials include Mylar,
Harries, W. L., Long, Edward R., Jr., Long, Sheila Ann T.   +2 more
core   +1 more source

Different imaging techniques for investigation of treatment effects on various substrate surfaces [PDF]

, 2015
The different imaging techniques were used for measurement of the properties changes on substrate surfaces. In this paper we report about testing various treatment on different substrates following investigation and characterization of the advantages ...
Chmela, O.
core