Mechanical and thermal studies of brilliant green dye doped poly(vinyl alcohol) polymer composite

Author(s):  
Mallikarjun H. Anandalli ◽  
R. F. Bhajantri ◽  
Sunil G. Rathod ◽  
T. M. Kanakaraj ◽  
Chetan Chavan ◽  
...  
2000 ◽  
Vol 29 (2) ◽  
pp. 92-93 ◽  
Author(s):  
Masahiro Suzuki ◽  
Naomi Takada ◽  
Toshiki Koyama ◽  
Satoshi Kobayashi ◽  
Mutsumi Kimura ◽  
...  

2020 ◽  
Vol 28 (3) ◽  
pp. 775-793 ◽  
Author(s):  
Chun Fah Mok ◽  
Yern Chee Ching ◽  
Farina Muhamad ◽  
Noor Azuan Abu Osman ◽  
Nguyen Dai Hai ◽  
...  

2010 ◽  
Vol 5 (5-6) ◽  
pp. 340-351 ◽  
Author(s):  
T. S. Kurkin ◽  
A. N. Ozerin ◽  
A. S. Kechek’yan ◽  
O. T. Gritsenko ◽  
L. A. Ozerina ◽  
...  

2021 ◽  
Vol 33 (4) ◽  
pp. 762-766
Author(s):  
BHABANI SHANKAR PANDA ◽  
MOHAMMED ANSAR AHEMAD

The present work concerns on the synthesis of silver nanoparticles at 25 ºC using raw fruits extract of Bakul (Mimusops elengi) tree via chemical reduction route development of poly(vinyl alcohol) PVA-silver polymer nanocomposite films. The nanocomposite films were subjected to characterization by UV-visible, FTIR, X-ray diffraction, field emission scanning electron microscope (FESEM) and thermal studies. The UV-visible spectrum shows a characteristic broad absorption band observed near 465 nm suggesting presence of silver nanoparticles in polymer nanocomposites (PNCs) film. The vibrational band shift of –OH group of poly(vinyl alcohol) in the presence of nanoparticle designated the chemical interaction between –OH group of poly(vinyl alcohol) and silver nanoparticles. The FESEM study confirmed that PVA is not only acted as a capping agent, but also a cross-linking agent. X-ray diffraction study shows that the existence of AgNPs in the poly nanocomposite film and nanoaparticles are crystalline in nature. Thermal studies suggest that the enhanced thermal stability is because of the good packing of the polar crystallites in β-PVA composites as compared to the non-polar α-phase of neat poly(vinyl alcohol) (PVA).


2013 ◽  
Vol 2013 ◽  
pp. 1-10
Author(s):  
Marufa Naznin ◽  
Md. Zainul Abedin

Acacia catechu extract was incorporated in the starch/PVA (60% : 40%) based films (0% to 15%) to the total weight of starch/PVA based film. The tensile strength (TS) of the starch/PVA blend film was 24 MPa whereas the acacia incorporated film shows the highest tensile strength (TS) of 33.8 MPa at 0.5%. Again, 0.5% acacia based film was treated with 10% urea, sugar, and molasses separately both at nonirradiated and irradiated conditions. At the nonirradiated condition molasses incorporated film gives the best results (TS 16 MPa, EB 59%), while sugar incorporated film shows a value of 10 MPa TS and EB of 123% at 200 krad. The films were investigated by FTIR. Thermal studies were carried out by TG/DTA. Water absorption experiment showed a different uptake of water by the different films. Soil degradation test revealed that after 70 days molasses incorporated film (both irradiated and nonirradiated) degrades to 100% into the soil.


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