Abstract
The harmful cyanobacteria blooms which usually form in spring and summer, cause global eutrophication of freshwater and coastal marine ecosystems. This study tried to utilize cyanobacteria as a raw material to produce biological poly(vinyl)alcohol-based films. Cyanobacteria was firstly modified with poly(ethylene glycol), guanidine hydrochloride, carboxymethyl cellulose and 3-glycidoxypropyltrimethoxysilane as plasticizer, modifier, toughening agent and coupling agent, respectively. And then the modified cyanobacteria was introduced to poly(vinyl)alcohol and cellulose nanofibers/poly(vinyl)alcohol matrix to improve the barrier properties of poly(vinyl)alcohol to light and water. Compared with poly(vinyl)alcohol and cellulose nanofibers/poly(vinyl)alcohol films, the obtained cyanobacteria/poly(vinyl)alcohol and the cyanobacteria/cellulose nanofibers/poly(vinyl)alcohol composites exhibit better resistance to light and water. More interestingly, we found that after adding cyanobacteria, the poly(vinyl)alcohol-based films present better barrier properties to blue-violet light and red light. In adddition, introducing cyanobacteria into poly(vinyl)alcohol or cellulose nanofibers/poly(vinyl)alcohol matrix increases the surface roughness and contact angle to water of the composites.
Highlights
The global bioplastics for packaging industry is forecast to grow from 2017–2022 at an annual average rate of 17% to a market value of almost $7.2 billion according to a report from Smithers P.[1]
The purpose of this study is to explore the possibility of direct utilizing cyanobacteria as raw materials to prepare CY/Cellulose nanofibers (CNF)/ PVA films, and to improve the light and water resistance of PVA films
The cyanobacteria (CY) collected in this experiment were collected from the algal and water separation station in Yixing Bafang port, which is located on the western bank of Taihu lake, with a straight-line distance of 1.5 km from the longdepth high-speed (G25) and 0.8 km from the dubian line (S230)
Summary
The global bioplastics for packaging industry is forecast to grow from 2017–2022 at an annual average rate of 17% to a market value of almost $7.2 billion according to a report from Smithers P.[1]. As one of the important bioplastics, poly(vinyl)alcohol (PVA) has a broad spectrum of applications in fabricating coatings and films in food applications [2]. It is a main ingredient in lubricant or temporary skin covers or wound dressings in pharmaceutical applications [2,3,4,5] because of its biocompatibility, biodegradability, non-toxicity, inexpensiveness [6], easy process situation, excellent transparency, surface activity [3], and suitable film-forming capabilities [4].
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
