Photo-Reactive Nanogel as a Means to Tune Properties during Polymer Network Formation

Polymer Chemistry
Jiancheng LiuJ W Stansbury

Abstract

Photo-reactive nanogels with an integrated photoinitiator-based functionality were synthesized via a Reversible Addition-Fragmentation Chain Transfer (RAFT) process. Without additional free initiators, this nanogel is capable of radical generation and initiating polymerization of a secondary monomer (i.e. dimethacrylate) that infiltrates and disperses the nanogel particles. Due to the presence of RAFT functionality and the fact that all initiating sites are initially located within the nanogel structure, gelation can be delayed by sequencing the polymerization from the nanogel to the bulk matrix. During polymerization of a nanogel-filled resin system, a progressive delay of gelation conversion from about 2 % for conventional chain growth polymerization to 18 % for the same monomer containing 20 wt% nanogel additive was achieved. A significant delay of stress development was also observed with much lower final stress achieved with the nanogel-modified systems due to the change of network formation mechanics. Compared with the nanogel-free dimethacrylate control, which contained uniformly distributed free initiator, the flexural modulus and mechanical strength results were maintained for the photopolymers with nanogel contents gr...Continue Reading

References

Sep 11, 2002·Biomaterials·Kytai Truong Nguyen, Jennifer L West
Jul 28, 2004·Langmuir : the ACS Journal of Surfaces and Colloids·Yong LiuIgor Luzinov
Aug 20, 2005·Journal of Dental Research·H LuC N Bowman
Feb 18, 2010·Macromolecules·Christopher J KloxinChristopher N Bowman
Aug 18, 2010·Advanced Materials·Ya-Jun ChengSheng Lin-Gibson
Mar 11, 2011·Dental Materials : Official Publication of the Academy of Dental Materials·Rafael R MoraesJeffrey W Stansbury
Feb 22, 2012·Chemical Communications : Chem Comm·Yu ZhengWenxin Wang
Oct 31, 2012·European Polymer Journal·Jiancheng LiuJeffrey W Stansbury

❮ Previous
Next ❯

Citations

Sep 11, 2014·Dental Materials : Official Publication of the Academy of Dental Materials·JianCheng Liu, Jeffrey W Stansbury
Oct 20, 2015·Materials Science & Engineering. C, Materials for Biological Applications·D S MarquesC M S G Baptista
May 9, 2015·European Polymer Journal·Caroline R Szczepanski, Jeffrey W Stansbury
Jul 6, 2016·ACS Applied Materials & Interfaces·Raghavan Baby RakhiHusam N Alshareef
Sep 25, 2014·Journal of Dental Research·E A DailingJ W Stansbury
May 6, 2019·Journal of Dental Research·B M FronzaJ W Stansbury
Aug 21, 2016·Journal of Materials Chemistry. B, Materials for Biology and Medicine·Manju SaraswathyDevatha Nair
Jun 10, 2021·Dental Materials : Official Publication of the Academy of Dental Materials·Ima Y RadJeffrey W Stansbury

❮ 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.