Jayawardena, K. D. G. Imalka; Thirimanne, Hashini M.; Tedde, Sandro Francesco; Huerdler, Judith E.; Parnell, Andrew J.; Bandara, R. M. Indrachapa; Mills, Christopher A.; Silva, S. Ravi P.
Millimeter-Scale Unipolar Transport in High Sensitivity Organic–Inorganic Semiconductor X-ray Detectors
Hybrid inorganic-in-organic semiconductors are an attractive class of materials for optoelectronic applications. Traditionally, the thicknesses of organic semiconductors are kept below 1 μm due to poor charge transport in such systems. However, recent work suggests that charge carriers in such organic semiconductors can be transported over centimeter length scales opposing…
Effect of Irradiation and Detection of Long-Lived Polyenyl Radicals in Highly Crystalline Ultra-High Molar Mass Polyethylene (UHMMPE) Fibers
Forster, Amanda L.; Tsinas, Zois; Al-Sheikhly, Mohamad
To improve properties such as thermal conductivity, low temperature thermal strain, and creep resistance of ultra-high molar mass polyethylene (UHMMPE) fibers, several researchers have previously undertaken efforts to crosslink these fibers using radiation. Ionizing radiation is commonly used to crosslink bulk UHMMPE in other applications, such as artificial joints. However,…
Morphology and ionic conductivity relationship in silk/cellulose biocomposites
Blessing, Bailey; Trout, Cory; Morales, Abneris; Rybacki, Karleena; Love, Stacy A.; Lamoureux, Guillaume; O’Malley, Sean M.; Hu, Xiao; Cruz, David Salas-de la
The relationship between morphology and the ionic conductivity of polysaccharide–protein bio-electrolyte membranes is explored in this study. Structural proteins and polysaccharides form hydrophobic and electrostatic interactions, and the resulting matrices can exhibit novel and useful properties. However, transforming these natural biomacromolecules from their native state to a more usable form…
3D-Printing of Pure Metal–Organic Framework Monoliths
Lim, Gwendolyn J. H.; Wu, Yue; Shah, Bhuvan B.; Koh, J. Justin; Liu, Connie K.; Zhao, Dan; Cheetham, Anthony K.; Wang, John; Ding, Jun
Metal–organic frameworks (MOFs) are usually synthesized in powder form. For many practical applications, MOFs need to be shaped into monoliths that can be easily handled. However, conventional shaping methods, such as pelletization, often result in a decrease in functionality. Recently, MOF-containing monoliths have been made using direct ink writing (DIW;…
Ion transport, polarization and electro-responsive elelctrorheological effect of self-crosslinked poly(ionic liquid)s with different counterions
Liu, Yang; Zhao, Jia; He, Fang; Zheng, Chen; Lei, Qi; Zhao, Xiaopeng; Yin, Jianbo
Self-crosslinked bis(imidazolium)-based poly(ionic liquid)s (PILs) containing different counterions (P, X = BF4−, PF6−, TfO−, TFSI−) are synthesized and the influence of counterions on electro-responsive electrorheological (ER) effect is studied in order to understand the structure-property relationship of crosslinked PIL-based ER system. It is found that the size and type of…
Construction of Dual Orientation Crystalline Structure in Poly(vinyl alcohol)/Graphene Oxide Nano-Composite Hydrogels and Reinforcing Mechanism
Meng, Yeqiao; Zhao, Xiaowen; Ye, Lin
Oriented poly(vinyl alcohol) (PVA)/graphene oxide (GO) nanocomposite hydrogels with different draw ratios were prepared by stretching during a freezing/thawing process. The PVA/GO samples with a draw ratio of 200% had significantly enhanced mechanical properties by formation of a microfibrillar structure, while the tensile strength and compressive modulus respectively reached as…
Dielectric and flash DSC investigations on an epoxy based nanocomposite system with MgAl layered double hydroxide as nanofiller
Szymoniak, Paulina; Li, Zhi; Wang, De-Yi; Schönhals, Andreas
Nanocomposites based on MgAL layered double hydroxides (LDH) and an epoxy resin were prepared and investigated by a combination of complementary methods. As epoxy resin Bisphenol A diglycidyl ether (DGEBA) was used with Diethylenetriamine as curing agent. The LDH was modified with taurine, which acts as an additional crosslinking agent…
Trifluoromethyl and benzyl ether side groups containing novel sulfonated co-poly(ether imide)s: Application in microbial fuel cell
Kumar, Anaparthi Ganesh; Saha, Sayantani; Komber, Hartmut; Tiwari, Bikash Ranjan; Ghangrekar, Makarand M.; Voit, Brigitte; Banerjee, Susanta
A new diamine monomer namely 4,4′-((2′,5′-bis(benzyloxy)-3,3′'-bis(trifluoromethyl)--4,4′'-diyl)bis(oxy))dianiline (TADBE) was prepared. A series of sulfonated co-poly(ether imide)s was synthesized using this diamine as one of the co-monomers along with 4,4′-diaminostilbene-2,2′-disulfonic acid (DSDSA) on reaction with a six-membered dianhydride, 1,4,5,8-naphthalene…
Restricting Effect of Solvent Aggregates on Distribution and Mobility of CuCl2 in Homogenous Catalysis
Wang, Yongtao; Wang, Guanqi; Yao, Jia; Li, Haoran
Extensive experimental and theoretical studies have proven the existence of solvent aggregates in alcohols, and some attempts have been made to explore the uneven distribution of solutes. Here, we studied the distribution and mobility of CuCl2 in 3-hexanol and ethanol and investigated the aerobic oxidation of 2,3,6-trimethylphenol under these systems.…
Fabrication and investigation of 3D tuned PEG/PEDOT: PSS treated conductive and durable cotton fabric for superior electrical conductivity and flexible electromagnetic interference shielding
Ghosh, Sabyasachi; Ganguly, Sayan; Remanan, Sanjay; Das, Narayan Ch
Promotions of conducting e-textiles are drawing attention for mitigating electromagnetic radiation pollution. Probably it is a huge challenge to gain long-term durable and stable fabric for all-weather outdoor application. In this work, a facile dip coating design has been adopted to fabricate PEG/PEDOT: PSS treated fabric. The high electrical conductivity…