Assessment of green approaches for the synthesis of physically crosslinked lignin hydrogels

Publication date: 25 January 2020Source: Journal of Industrial and Engineering Chemistry, Volume 81Author(s): Amaia Morales, Jalel Labidi, Patricia GullónAbstractLignin is an excellent candidate to be used as a starting material for hydrogel synthesis due to its highly functional character. The exhaustible character of the fossil resources linked to the increase of plastic residues in the environment encourages an intensive research on biorenewable and biodegradable polymers to synthesize new materials. Taking into account this current scenario, this work searches for new green routes to elaborate physical hydrogels with excellent capacity of swelling and suitable consistency. To this end, lignin and poly(vinyl alcohol) were blended in different proportions following a three-level-two-factorial design and using six different routes of crosslinking and drying for each set of experiments. The hydrogels formed under the optimal conditions were characterized by FTIR, SEM, XRD, DSC and TGA and their mechanical properties were also evaluated by compression tests. The selected optimum synthesis routes enabled the obtaining of physically crosslinked hydrogels with up to 800% water retention ability. FTIR spectra confirmed the interactions between lignin and PVA showing shifts and modifications on the characteristic bands of the raw polymers. Compression tests showed that all the hydrogels kept complete integrity even compressing them up to an 80% of their initial thickness.Gra...
Source: Journal of Industrial and Engineering Chemistry - Category: Chemistry Source Type: research

Related Links:

BOSTON (CBS) — According to a new study published in the journal Cancer, even light to moderate alcohol intake has been linked to a higher risk of cancer. Researchers at the University of Tokyo and the Harvard T.H. Chan School of Public Health looked at data on over 60,000 cancer patients in Japan. They found drinking as little as one drink a day for 10 years or two drinks a year for five years, was associated would increase overall cancer risk by five percent, such as cancers of the colon, stomach, breast, prostate, and esophagus. Cancer risk was lowest with no alcohol consumption.
Source: WBZ-TV - Breaking News, Weather and Sports for Boston, Worcester and New Hampshire - Category: Consumer Health News Authors: Tags: Boston News Health Healthwatch Seen On WBZ-TV Syndicated Local Cancer Dr. Mallika Marshall Drinking Source Type: news
Abstract Anoectochilus roxburghii (Wall.) Lindl., Orchidaceae, is a Chinese medicinal plant which can be effective for some diseases such as hepatitis, nephritis, pneumonia. Its active ingredient is kinsenoside. The mechanisms of kinsenoside on the liver-protective effect have not been fully explored until today. The present study was aimed to investigate the protective effect and mechanism of kinsenoside on acute alcoholic liver injury. The protected activity of kinsenoside (10, 20 and 40 mg/kg) were investigated on acute alcoholic liver injury in mice. Male C57BL/6 J mice were fed with non-fat feed for 30 days and oral a...
Source: Revista Brasileira de Farmacognosia - Category: Drugs & Pharmacology Source Type: research
Condition:   Fatty Liver Disease Intervention:   Other: A complete cardiovascular and liver characterization will be carried out Sponsors:   Instituto de Investigación Marqués de Valdecilla;   Hospital Universitario Puerta del Hierro Majadahonda.;   Hospital Universitario Ramón y Cajal;   Hospital General Universitario Gregorio Marañón Not yet recruiting
Source: - Category: Research Source Type: clinical trials
Conditions:   Non-Alcoholic Fatty Liver Disease;   Non-alcoholic Fatty Liver;   Non-alcoholic Steatohepatitis Intervention:   Sponsors:   Cambridge University Hospitals NHS Foundation Trust;   The European Association for the Study of the Liver;   Children's Liver Disease Foundation Recruiting
Source: - Category: Research Source Type: clinical trials
Publication date: Available online 8 December 2019Source: The Lancet PsychiatryAuthor(s): Senthil Amudhan, Gopalkrishna Gururaj, Mathew Varghese, Vivek Benegal, Girish Nagaraja Rao, David Vincent Sheehan, Arun Mahadeo Kokane, Bir Singh Chavan, Pronob Kumar Dalal, Daya Ram, Kangkan Pathak, Raj Kumar Lenin Singh, Lokesh Kumar Singh, Pradeep Sharma, Pradeep Kumar Saha, Chellamuthu Ramasubramanian, Ritambhara Yeshwant Mehta, Theerthankara Meethal ShibukumarSummaryBackgroundIndia accounts for 18% of the global population and 26·6% of global suicide deaths. However, robust population-based, nationally representative data ...
Source: The Lancet Psychiatry - Category: Psychiatry Source Type: research
American Journal of Psychiatry, Ahead of Print.
Source: American Journal of Psychiatry - Category: Psychiatry Authors: Source Type: research
Authors: Weimer DL, Moberg P, French F, Tanner-Smith EE, Finch AJ Abstract BACKGROUND: Recovery high schools (RHS) provide a supportive educational and therapeutic environment for students subsequent to treatment for substance use disorders (SUDs). Most students served by RHSs have concurrent mental health disorders and are at risk for school failure or dropout and substance use relapse. AIMS OF THE STUDY: The central question addressed is whether RHSs are economically efficient alternatives to other high school settings for students in recovery. The aim is to estimate the incremental cost-benefit of RHSs. ...
Source: Journal of Mental Health Policy and Economics - Category: Psychiatry Tags: J Ment Health Policy Econ Source Type: research
Phys. Chem. Chem. Phys., 2019, Accepted Manuscript DOI: 10.1039/C9CP05992J, PaperXiaoyu Wang, Ruiyi Wang, Jie Wang, Chaoyang Fan, Zhanfeng Zheng Layered double hydroxides-supported Au-Cu alloy nanoparticles (NPs) was found to be highly ef ficient catalyst for the oxidative esterification of benzyl alcohol with methanol in the presence of molecular oxygen into... The content of this RSS Feed (c) The Royal Society of Chemistry
Source: RSC - Phys. Chem. Chem. Phys. latest articles - Category: Chemistry Authors: Source Type: research
Associations between drinking and cancer were particularly strong for cancers of the mouth, throat, stomach and colon.
Source: NYT Health - Category: Consumer Health News Authors: Tags: Alcoholic Beverages Cancer Source Type: news
(Wiley) In a new Cancer study conducted in Japan, even light to moderate alcohol consumption was associated with elevated cancer risks.
Source: EurekAlert! - Medicine and Health - Category: International Medicine & Public Health Source Type: news
More News: Alcoholism | Chemistry | Environmental Health