Cellulose microspheres bearing poly(ε-caprolactone) grafts of different molecular weights were investigated to evaluate the effect of graft length on the interfacial properties. Surface force and friction measurements were performed using an atomic force microscope in colloidal probe mode. The maximum interaction distance and adhesion is dependent on the temperature and the time in contact via a diffusion controlled mechanism. The effects are highest for the longer grafts, and molecular weight thresholds were found to lie between 21 and 34 kDa at 25 °C and between 9 and 21 kDa at 40 °C. The interpenetration of the graft into a matrix leads to "hidden length" contributions to adhesion, analogous to those in natural biocomposites. The nanotribology results display Amontonian behavior, and the friction force at zero applied load is higher at the graft-graft interface than for a bare cellulose sphere interacting with the graft. These results clearly demonstrate the benefits of the grafted polymer layer on the adhesion, toughness, and resistance to shear in the design of cellulosic nanobiocomposites.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1021/bm301790b | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Implementation of a Comprehensive Protocol for Enhanced Recovery After Surgery (ERAS) in Kidney Transplant Recipients Improves Patient and Graft Outcomes.
Clin Transplant
January 2025
Glickman Urological & Kidney Institute, Cleveland Clinic, Cleveland, Ohio, USA.
Background: Enhanced recovery after surgery (ERAS) protocols have gained widespread acceptance as a means to enhance surgical outcomes. However, the intricate care required for kidney transplant recipients has not yet led to the establishment of a universally recognized and dependable ERAS protocol for kidney transplantation.
Objective: We devised a customized ERAS protocol to determine its effectiveness in improving surgical and postoperative outcomes among kidney transplant recipients.
Sarcopenic obesity is significantly associated with poorer overall survival after liver transplantation: a systematic review and meta-analysis.
Front Nutr
December 2024
Department of Critical Care Medicine, Guang'anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China.
Background: Sarcopenia has been shown to worsen survival after liver transplantation. However, it remains unclear whether coexisting sarcopenia and obesity, so-called sarcopenic obesity (SO), may also synergistically increase their adverse effects. This meta-analysis aimed to evaluate whether pre-transplant SO independently predicts survival in this population.
View Article and Find Full Text PDFClinical impacts of total parenteral nutrition in hematopoietic stem cell transplantation patients with high nutritional risk.
Front Nutr
December 2024
Department of Pharmacy, The Second Affiliated Hospital of Dalian Medical University, Dalian, Liaoning, China.
Background: Hematopoietic stem cell transplantation (HSCT) patients often receive consecutive intensive chemotherapy, which can lead to gastrointestinal complications and acute graft-versus-host disease (GVHD), placing patients at high nutritional risk.
Aim: This retrospective study aimed to evaluate the benefits of nutritional support in maintaining nutritional status, reducing weight loss without increasing the incidence of catheter-related bloodstream infections (CRBSI) or liver dysfunction, and improving clinical outcomes in HSCT patients at high nutritional risk.
Methods: A total of 526 patients who underwent HSCT were included in the study.
Rare STAT3 haplotypes cause a predisposition to developing congenital anomalies of the kidney and urinary tract disorder.
Turk J Med Sci
December 2024
Department of Medical Genetics, Faculty of Medicine, Başkent University, Ankara, Turkiye.
Background/aim: Congenital anomalies of the kidney and urinary tract (CAKUT) are characterized by renal developmental disorders in the embryonic period. STAT3 is a member of the STAT protein family. The members of this protein family play roles in various cellular mechanisms, such as the early stages of embryonic development, kidney development, and renal diseases.
View Article and Find Full Text PDFEndograft-specific hemodynamics after endovascular aneurysm repair: a CFD analysis.
Sci Rep
December 2024
Department of Vascular Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.
Intraluminal prosthetic graft thrombus (IPT) has been described in case of endovascular aortic pathology repair. This study aimed to assess hemodynamic indicators associated with various anatomical morphologies following endovascular aortic repair (EVAR), aiming to offer further references for the choice of clinical therapy. Six model models (normal, iliac compression, aortic compression, aortoiliac compression, iliac distortion, and long-leg stent) were established based on common anatomical morphologies following EVAR.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!