Non-oxidized cellulose nanofibers as a topical hemostat: In vitro thromboelastometry studies of structure vs function

Date

2021

Authors

Mohamed, Elmira
Coupland, Lucy
Crispin, Philip
Fitzgerald, Ailene
Nisbet, David
Tsuzuki, Takuya

Journal Title

Journal ISSN

Volume Title

Publisher

Pergamon-Elsevier Ltd

Abstract

Hemorrhage remains a significant cause of morbidity and mortality following trauma and during complex surgeries. A variety of nanomaterials, including oxidized cellulose nanofibers (OCNFs), have been studied to overcome the disadvantages of current commercial topical hemostats. However, the relationship between nano-structural characteristics and hemostatic efficacy of non-oxidized cellulose nanofibers (CNFs) has not been elucidated. Herein, we present the first report of the correlation between structure and hemostatic performance of CNFs. In vitro thromboelastometry studies on CNFs, synthesized by ball-milling, showed that there is an optimum balance point between the aspect ratio (AR) and specific surface area (SSA) of nanofibers in terms of their maximum contribution to platelet function and plasma coagulation. The optimized CNFs with high SSA (17 m2/g) and a high AR (166) shortened normal whole blood clotting time by 68%, outperforming cellulose-based hemostats. Additionally, CNFs reduced clotting time in platelet-deficient blood (by 80%) and heparinized blood (by 54%)

Description

Keywords

Non-oxidized cellulose nanofibers, Ball-milling, Green hemostatic material, Blood-material interaction, In vitro thromboelastometry

Citation

Source

Carbohydrate Polymers

Type

Journal article

Book Title

Entity type

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License Rights

Restricted until

2099-12-31