Structural and morphological evaluation of CNC reinforced PVA/Starch biodegradable films

International Journal of Biological Macromolecules
Maria-Cristina PopescuDaniel Timpu

Abstract

Nanocomposite films containing cellulose nanocrystals (CNC), as the reinforcing phase, and poly(vinyl alcohol) (PVA)/starch (S) blend, as the matrix, were prepared by solution casting technique. For the preparation, 5, 10, 15 wt% CNC suspension were incorporated in blends containing 90 wt% PVA/10 wt% S, 75 wt% PVA/25 wt% S and 50 wt% PVA/50 wt% S. Structural evaluation was done by Fourier transform infrared spectrometry and X-ray diffraction, and the morphological aspects by atomic force microscopy. Infrared spectroscopy evidenced the presence of H-bond interactions between the PVA and S and between PVA/S blend and CNC, and also variation in the conformational rearrangement, while the X-ray diffraction showed that the crystallite size and the degree of crystallinity were strongly affected by blending of PVA with S and also by the incorporation of CNC in the nanocomposite films. The surface roughness of studied samples increased with the increasing of S and filler content.

References

Jul 29, 2010·Biopolymers·Maria-Cristina PopescuOana Craciunescu
Dec 21, 2011·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Jie ZengZhengang Ru
Sep 4, 2013·Journal of Materials Science. Materials in Medicine·Rajeswari RavichandranSeeram Ramakrishna
Feb 11, 2015·Carbohydrate Polymers·M P ArrietaJ M Kenny
Jun 27, 2015·Journal of Biomedical Materials Research. Part a·Shahrzad FathollahipourMojtaba Koosha
Jul 19, 2015·International Journal of Biological Macromolecules·Zahra Sekhavat PourMousa Ghaemy
Aug 4, 2015·International Journal of Biological Macromolecules·Guisheng GongLi Zhou
Nov 27, 2015·International Journal of Biological Macromolecules·Xiancai JiangLinxi Hou
Dec 31, 2016·International Journal of Biological Macromolecules·Huafeng TianXiaogang Luo
Apr 4, 2017·International Journal of Biological Macromolecules·Maria-Cristina Popescu

❮ Previous
Next ❯

Citations

Jan 24, 2020·International Journal of Biological Macromolecules·Romina FarajpourShila Safayan
Jun 1, 2019·International Journal of Biological Macromolecules·Maria-Cristina PopescuBogdan C Simionescu

❮ Previous
Next ❯

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.