Nucleation ability of thermally reduced graphene oxide for polylactide: role of size and structural integrity

The Journal of Physical Chemistry. B
Yuan-Ying LiangZhong-Ming Li

Abstract

Following our previous work on graphene oxide-induced polylactide (PLA) crystallization [Macromolecules 2010, 43, 5000-5008], in the current work, we further revealed the role of size and structural integrity of thermally reduced graphene oxide (RGO) in PLA crystallization. RGO nanoplatelets with different architectures were obtained via bath and probe ultrasound (RGOw and RGOp). The average size of RGO decreased substantially with ultrasound intensity and time, where the generation of RGO edges constituted the translocation of functional group sites from in-plane to edges. The formation of sp(3)-configuration dominated in RGOw, whereas the partial recovery of sp(2)-configuration occurred in RGOp, giving rise to either the escalation of sp(3)/sp(2) ratio for RGOw or retrogradation of that for RGOp. Isothermal crystallization kinetics of PLA nanocomposites containing RGOw and RGOp was determined by in situ synchrotron wide-angle X-ray diffraction. The induction period and overall crystallization rate of PLA/RGOw nanocomposites were strengthened with diminishing platelet size because of more nucleation sites encouraged by redistribution of functional groups. However, the adverse situation was found in PLA/RGOp nanocomposites. The...Continue Reading

References

Jul 21, 2006·Nature·Nicholas A Kotov
Mar 23, 1990·Science·K S Suslick
Sep 20, 1991·Science·E B Flint, K S Suslick
Jun 11, 2008·Nano Letters·Cristina Gómez-NavarroKlaus Kern
Jul 26, 2008·Nature Nanotechnology·Dan LiGordon G Wallace
Aug 8, 2008·Nature Nanotechnology·Xu DuEva Y Andrei
Jun 30, 2009·Physical Chemistry Chemical Physics : PCCP·Sara E Skrabalak
Aug 21, 2009·ACS Nano·Hui-Lin GuoXing-Hua Xia
Oct 6, 2009·Ultrasonics Sonochemistry·Fabrice GuittonneauSandrine Huclier
Mar 5, 2010·Nano Letters·Cristina Gómez-NavarroUte Kaiser
Apr 8, 2010·Chemistry : a European Journal·Giancarlo Cravotto, Pedro Cintas
Dec 24, 2010·Nanotechnology·Peng-Gang RenZhong-Ming Li
Mar 25, 2011·Nature Chemistry·Jan M EnglertAndreas Hirsch
Jun 17, 2011·Langmuir : the ACS Journal of Surfaces and Colloids·Umar KhanJonathan N Coleman
Jun 30, 2011·Macromolecular Rapid Communications·Dipanwita MajumdarShyamal K Saha
Aug 2, 2011·Nanoscale·Donghui LongLicheng Ling
Aug 3, 2011·Physical Chemistry Chemical Physics : PCCP·Jun-Sheng YangXiao-Guang Ma
Feb 16, 2012·The Journal of Physical Chemistry Letters·Jia-Zhuang XuZhong-Ming Li

❮ 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.