Thermal and mechanical properties of nano-titanium dioxide-doped polyvinyl alcohol

2012 ◽  
Vol 70 (4) ◽  
pp. 1251-1264 ◽  
Author(s):  
Ranjana Singh ◽  
Suresh G. Kulkarni ◽  
Shrikant S. Channe
2020 ◽  
Vol 10 (6) ◽  
pp. 771-779
Author(s):  
Jing Deng ◽  
Qi Jue Chen ◽  
Ding Jie Chen ◽  
Luo Jie Zheng ◽  
Wen Li ◽  
...  

The aim of this research was to probe the potential application of nano-titanium dioxide (TiO2)/basic magnesium hypochlorite (BMH)-containing linear low-density polyethylene (LLDPE) composite film in grape fresh-keeping. Mechanical properties, transparency, barrier performance and antibacterial activity of the nano-composite membrane were measured, and results showed that the antibacterial zone diameter of TiO2/BMH on pathogen-Aspergillus niger was 31.4 mm, with mixing ratio of BMH/TiO2 to 2:1. It was clearly shown that the synthesized nano-composite films decreased mechanical properties and transparency of the membrane, and also had a significant impact on sensory score, mass loss rate, decay rate, ascorbic acid (Vc) content and titratable acid content compared with LLDPE films. Moreover, the results revealed that the LLDPE antibacterial film can be effectively used for storing grapes, preserving the flavor of grapes and had an obviously effect in prolonging grapes’ shelf life.


2020 ◽  
Vol 10 (7) ◽  
pp. 2246 ◽  
Author(s):  
Ali Yousefi ◽  
Waiching Tang ◽  
Mehrnoush Khavarian ◽  
Cheng Fang ◽  
Shanyong Wang

One of the growing concerns in the construction industry is energy consumption and energy efficiency in residential buildings. Moreover, management of non-degradable solid glass wastes is becoming a critical issue worldwide. Accordingly, incorporation of recycled expanded glass aggregates (EGA) as a substitution for natural fine aggregate in cement composites would be a sustainable solution in terms of energy consumption in the buildings and waste management. This experimental research aims to investigate the effects of EGA on fresh and hardened properties and thermal insulating performance of cement mortar. To enhance the mechanical properties and water resistance of the EGA-mortar, nano titanium dioxide (nTiO2) was used as nanofillers. The results showed an increase in workability and water absorption of the EGA-mortar. In addition, a significant decrease in bulk density and compressive strength observed by incorporating EGA into the cement mortar. The EGA-mortar exhibited a low heat transfer rate and excellent thermal insulation property. Furthermore, inclusion of nTiO2 increased compressive strength and water resistance of EGA-mortar, however, their heat transfer rate was increased. The results demonstrated that EGA-mortar can be integrated into the building envelop or non-load bearing elements such as wall partition as a thermal resistance to reduce the energy consumption in residential buildings.


1975 ◽  
Vol 22 (5) ◽  
pp. 173-175 ◽  
Author(s):  
Osamu Yamaguchi ◽  
Hichirô Ômaki ◽  
Kiyoshi Takeoka ◽  
Kiyoshi Shimizu

2019 ◽  
Vol 57 (1) ◽  
pp. 17-24 ◽  
Author(s):  
Mostafa Zamani ◽  
Elham Gholibegloo ◽  
Mozhgan Aghajanzadeh ◽  
Fatemeh Salehian ◽  
Seyed Esmaeil Sadat Ebrahimi ◽  
...  

2011 ◽  
Vol 123 (1) ◽  
pp. 135-142 ◽  
Author(s):  
P. A. Sreekumar ◽  
Mamdouh A. Al-Harthi ◽  
S. K. De

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