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http://dx.doi.org/10.1016/j.jaci.2011.03.007 | DOI Listing |
Polymers (Basel)
December 2024
State Key Laboratory of Organic-Inorganic Composites, Beijing Laboratory of Biomedical Materials, College of Life Science and Technology, Beijing University of Chemical Technology, Beijing 100029, China.
A series of polyurethanes (PU-GT) were prepared using polyglycolide-block-polytetrahydrofuran-block-polyglycolide (PGA-PTHF-PGA), polytetrahydrofuran homopolymer (PTHF), glycerol, and hexamethylene diisocyanate (HDI) by a one-pot synthesis method. The non-isothermal crystallization and subsequent heating curves showed that the PTHF component in these polyurethanes could crystallize in a temperature range of -11.5~2.
View Article and Find Full Text PDFBiomacromolecules
January 2025
MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310058, China.
-Acetyl cysteine (NAC) is an essential molecule that boosts acute lung injury (ALI) defense via its direct antioxidant capability. Nevertheless, the therapeutic use of NAC is limited due to its poor bioavailability and short half-life. In this study, NAC was grafted to the polyurethane consisting of poly(propylene fumarate), poly(thioketal), and 1,6-hexamethylene diisocyanate (PFTU) to reduce excessive oxidative stress and inflammatory factors in ALI.
View Article and Find Full Text PDFMolecules
November 2024
Department of Applied Chemistry, Osaka Institute of Technology, 5-16-1 Omiya, Ashahi-ku, Osaka 535-8585, Japan.
The mixture of hexamethylene diisocyanate (HDI) and butanol (BuOH) with the intercalation compound of 1,4-diazabicyclo[2.2.2]octane (DABCO) with α-zirconium phosphate (α-ZrP) has been evaluated as a latent thermal catalyst at varying temperatures.
View Article and Find Full Text PDFInt J Biol Macromol
January 2025
State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, China. Electronic address:
This study explored the synthesis of lignin-polyol (LP) by liquefaction of Kraft lignin in polyethylene glycol and glycerol. LP23 (23 wt% lignin) and LP41 (41 wt% lignin) were obtained with remarkable liquefaction yields of 97.43 % and 93.
View Article and Find Full Text PDFEnviron Sci Process Impacts
November 2024
Institut de recherche Robert-Sauvé en santé et en sécurité du travail (IRSST), Qc, Canada.
Isocyanates are well-known irritants and sensitizers, and measuring their occupational airborne exposure is challenging due to their high chemical reactivity and semi-volatile nature. This study builds on a previous publication by our team that focused on comparing evaluation methods for isocyanates. The current research aims at developing, validating, and applying a laboratory generation system designed to replicate real-world conditions for spraying clear coats in autobody shops using hexamethylene diisocyanate (HDI)-based products.
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