Results 31 to 40 of about 6,244 (251)

Valorization of Banana Peel Waste Used as Filler in Castor Oil Polyurethane Foam for Vegetal Oil Sorption

Journal of Natural Fibers, 2022
This research describes the influence of fiber content from the banana peel waste used as a filler in castor oil polyurethane foam (PU), obtaining eco-sorbent for vegetal oil sorption.
Larissa Martins, Noelle Zanini, Lara Pinheiro, Daniella Mulinari   +3 more
doaj   +1 more source

Poliuretanos elastoméricos obtenidos a partir de aceite de ricino y almidón de yuca original y modificado con anhídrido propiónico: síntesis, propiedades fisicoquímicas y fisicomecánicas Polyurethane elastomers from castor oil and chemically modified yucca starch: synthesis and physical-chemical, physical-mechanical and thermical properties

Química Nova, 2010
Chemical modification of cassava starch was conducted through an acylation reaction by using pyridine and propionic anhydride to replace the functional groups of starch. Polyurethane elastomers were prepared using suspensions of the mixture obtained from
Manuel F. Valero, Jorge E. Pulido, Álvaro Ramírez, Luz E. Higuita, Sandra M. Arias, Carlos S. Gonzáles, Leonidas J. Ruiz   +6 more
doaj   +1 more source

Comparative analysis of the impact of dissolved decay products on the dielectric performances of natural monoesters and mineral oil for power transformers

Scientific African, 2021
The challenge of bio-based insulating oil research is the development of a new alternative insulating liquid to mineral oil (MO) for power transformers with identical and even better characteristics in the long run.
Emeric Tchamdjio Nkouetcha, Ghislain Mengata Mengounou, Adolphe Moukengue Imano   +2 more
doaj   +1 more source

Poliuretanos obtenidos a partir de aceite de higuerilla modificado y poli-isocianatos de lisina: síntesis, propiedades mecánicas y térmicas y degradación in vitro

Química Nova, 2014
Biodegradable polyurethanes (PUR) were prepared from polyols derived from castor oil by transesterification of pentaerythritol-modified castor oil and lysine polyisocyanates (LDI and LTI).
Manuel F. Valero, Luis E. Díaz
doaj   +1 more source

Preparation of Temperature-Sensitive Polyurethanes Based on Modified Castor Oil

Fibres and Textiles in Eastern Europe, 2017
A series of temperature-sensitive polyurethanes (TSPUs) with polytetrahydrofuran glycol (PTMG), poly(ethylene glycol) (PEG) and maleic anhydride modified castor oil (MCO) as soft segments were prepared in this paper. The morphology of the temperature-sensitive polyurethane films was characterised by SEM, DSC and WAXD.
Li-Hong Bao, Li-Hong Bao, Hai-Teng Ma
openaire   +1 more source

Bio-based polyurethane prepared from Kraft lignin and modified castor oil

eXPRESS Polymer Letters, 2016
Current challenges highlight the need for polymer research using renewable natural sources as a substitute for petroleum-based polymers. The use of polyols obtained from renewable sources combined with the reuse of industrial residues such as lignin is ...
L. B. Tavares, C. V. Boas, G. R. Schleder, A. M. Nacas, D. S. Rosa, D. J. Santos   +5 more
doaj   +1 more source

Blends of nitrile butadiene rubber/poly (vinyl chloride): The use of maleated anhydride castor oil based plasticizer

Majalah Kulit, Karet, dan Plastik, 2016
Recently, much attention has been focused on research to replace petroleum-based plasticizers, with biodegradable materials, such as biopolymer which offers competitive mechanical properties.
Indiah Ratna Dewi, Ihda Novia Indrajati, Ike Setyorini   +2 more
doaj   +1 more source

Advances in Sustainable and Wearable Textile Based Soft Robotics

Advanced Functional Materials, EarlyView.
This Review examines advances in wearable textile‐based soft robotics, focusing on sustainable materials, integrated sensing, and scalable actuation. It discusses manufacturing and system integration across healthcare, assistive robotics, prosthetics, and human–machine interfaces, and highlights key challenges in circular design, including life‐cycle ...
Zahir Abbas, Marzia Dulal, Sophia K. Novoselov, Victoria K. Novoselov, Kostya S. Novoselov, Shaila Afroj, Nazmul Karim   +6 more
wiley   +1 more source

Electrospun Wood‐Derived Biopolymers as Electrodes in Electrochemical Energy Storage Technologies

Advanced Functional Materials, EarlyView.
Electrospinning transforms wood‐derived cellulose and lignin into architecturally defined, binder‐free carbon electrodes with tuneable porosity and functionality. This review shows how fibre design enables decoupled charge and mass transport, enhancing performance across battery systems, while identifying key challenges in spinnability, scalability ...
Michael W. Thielke, Hattie R. Chisnall, Jesus Vazquez Chavez, Ana B. Jorge Sobrido   +3 more
wiley   +1 more source

Adhesivos tipo poliuretano obtenidos a partir de aceite de ricino y almidón químicamente modificados

Química Nova, 2013
This study reports the preparation of polyurethane adhesives using polyols obtained from castor oil modified by a transesterification reaction with pentaerythritol and starch modified by glycosylation.
Manuel F. Valero
doaj   +1 more source