The Mechanical, Thermal, Rheological and Morphological Properties of PLA/PBAT Blown Films by Using Bis(tert-butyl dioxy isopropyl) Benzene as Crosslinking Agent

2018 ◽  
Vol 59 (S1) ◽  
pp. E227-E236 ◽  
Author(s):  
Xue Ai ◽  
Xin Li ◽  
Yinlei Yu ◽  
Hongwei Pan ◽  
Jia Yang ◽  
...  
Keyword(s):  
Crosslinking Agent ◽  
Morphological Properties ◽  
Blown Films ◽  
Tert Butyl ◽  
Isopropyl Benzene

The properties of chemical cross-linked poly(lactic acid) by bis(tert-butyl dioxy isopropyl) benzene

2018 ◽  
Vol 76 (2) ◽  
pp. 575-594 ◽  
Author(s):  
Xue Ai ◽  
Dongmei Wang ◽  
Xin Li ◽  
Hongwei Pan ◽  
Junjun Kong ◽  
...  
Keyword(s):  
Lactic Acid ◽  
Poly Lactic Acid ◽  
Tert Butyl ◽  
Isopropyl Benzene

scholarly journals Tert-butyl catechol/alkaline-treated kenaf/jute polyethylene hybrid composites: impact on physico-mechanical, thermal and morphological properties

2018 ◽  
Vol 76 (2) ◽  
pp. 763-784 ◽  
Author(s):  
Md Rezaur Rahman ◽  
Sinin Hamdan ◽  
Elammaran Jayamani ◽  
Akshay Kakar ◽  
Muhammad Khusairy Bin Bakri ◽  
...  
Keyword(s):  
Hybrid Composites ◽  
Morphological Properties ◽  
Tert Butyl

scholarly journals Influence of chain extender on mechanical, thermal and morphological properties of blown films of PLA/PBAT blends

2015 ◽  
Vol 43 ◽  
pp. 27-37 ◽  
Author(s):  
Liliane Cardoso Arruda ◽  
Marina Magaton ◽  
Rosário Elida Suman Bretas ◽  
Marcelo Massayoshi Ueki
Keyword(s):  
Chain Extender ◽  
Morphological Properties ◽  
Blown Films

scholarly journals Characteristics and Bioactivities of Carrageenan/Chitosan Microparticles Loading Α-mangostin

2021 ◽  
Author(s):  
Hien Thi Nguyen ◽  
Chinh Thuy Nguyen ◽  
Tu Thi Minh Nguyen ◽  
Hoa Dinh Hoang ◽  
Trang Do Mai Tran ◽  
...  
Keyword(s):  
Sodium Tripolyphosphate ◽  
Crosslinking Agent ◽  
Control Release ◽  
Morphological Properties ◽  
Cross Linking ◽  
Ionic Gelation ◽  
Chitosan Microparticles ◽  
Buffer Solutions ◽  
Anti Oxidant ◽  
Ph Buffer

Abstract This study attempted to develop carrageenan/chitosan based microparticles loading α-mangostin which was extracted from Vietnamese mangosteen skin. The carrageenan/chitosan/α-mangostin microparticles were prepared by ionic gelation method by mixing chitosan, carrageenan with α-mangostin and subsequently cross-linking the mixtures with sodium tripolyphosphate crosslinking agent. The content of α-mangostin in microparticles was changed to evaluate the effect of α-mangostin content on physical, morphological properties, particles size and bioactivities of the carrageenan/chitosan/α-mangostin microparticles. The obtained results showed that carrageenan, chitosan was interacted together and with α-mangostin. The presence of polymers matrix improved the release ability of α-mangostin into ethanol/pH buffer solutions. The carrageenan/chitosan/ α-mangostin microparticles have antibacterial (gram (+) strains) and anti-oxidant activities. The results suggested that combination of chitosan and carrageenan in the microparticles can enhance the control release of α-mangostin into solutions as well as keep the bioactivities of α-mangostin.

Emergence of Twisted Magnetic Flux Related Sigmoidal Brightening

2000 ◽  
Vol 179 ◽  
pp. 263-264
Author(s):  
K. Sundara Raman ◽  
K. B. Ramesh ◽  
R. Selvendran ◽  
P. S. M. Aleem ◽  
K. M. Hiremath
Keyword(s):  
Magnetic Field ◽  
Magnetic Fields ◽  
Magnetic Flux ◽  
Ultra Violet ◽  
Active Regions ◽  
Morphological Properties ◽  
Energy Storage And Conversion ◽  
The Sun ◽  
X Rays ◽  
The Magnetic Field

Extended AbstractWe have examined the morphological properties of a sigmoid associated with an SXR (soft X-ray) flare. The sigmoid is cospatial with the EUV (extreme ultra violet) images and in the optical part lies along an S-shaped Hαfilament. The photoheliogram shows flux emergence within an existingδtype sunspot which has caused the rotation of the umbrae giving rise to the sigmoidal brightening.It is now widely accepted that flares derive their energy from the magnetic fields of the active regions and coronal levels are considered to be the flare sites. But still a satisfactory understanding of the flare processes has not been achieved because of the difficulties encountered to predict and estimate the probability of flare eruptions. The convection flows and vortices below the photosphere transport and concentrate magnetic field, which subsequently appear as active regions in the photosphere (Rust & Kumar 1994 and the references therein). Successive emergence of magnetic flux, twist the field, creating flare productive magnetic shear and has been studied by many authors (Sundara Ramanet al.1998 and the references therein). Hence, it is considered that the flare is powered by the energy stored in the twisted magnetic flux tubes (Kurokawa 1996 and the references therein). Rust & Kumar (1996) named the S-shaped bright coronal loops that appear in soft X-rays as ‘Sigmoids’ and concluded that this S-shaped distortion is due to the twist developed in the magnetic field lines. These transient sigmoidal features tell a great deal about unstable coronal magnetic fields, as these regions are more likely to be eruptive (Canfieldet al.1999). As the magnetic fields of the active regions are deep rooted in the Sun, the twist developed in the subphotospheric flux tube penetrates the photosphere and extends in to the corona. Thus, it is essentially favourable for the subphotospheric twist to unwind the twist and transmit it through the photosphere to the corona. Therefore, it becomes essential to make complete observational descriptions of a flare from the magnetic field changes that are taking place in different atmospheric levels of the Sun, to pin down the energy storage and conversion process that trigger the flare phenomena.

Characterization of Tamm-Horsfall Urinary Glycoprotein

1973 ◽  
Vol 31 ◽  
pp. 420-421
Author(s):  
John P. Robinson ◽  
J. David Puett
Keyword(s):  
Electron Microscopy ◽  
Circular Dichroism ◽  
Secondary Structure ◽  
Quaternary Structure ◽  
Normal Adult ◽  
Morphological Properties ◽  
Adult Males ◽  
Circular Dichroïsm ◽  
Urinary Glycoprotein

Much work has been reported on the chemical, physical and morphological properties of urinary Tamm-Horsfall glycoprotein (THG). Although it was once reported that cystic fibrotic (CF) individuals had a defective THG, more recent data indicate that THG and CF-THG are similar if not identical.No studies on the conformational aspects have been reported on this glycoprotein using circular dichroism (CD). We examined the secondary structure of THG and derivatives under various conditions and have correlated these results with quaternary structure using electron microscopy.THG was prepared from normal adult males and CF-THG from a 16-year old CF female by the method of Tamm and Horsfall. CF female by the method of Tamm and Horsfall.

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