Thermal, water absorption, and mechanical characterizations of polylactide based nanocomposites: Comparison between sodium and modified montmorillonite as reinforcement materials

2021 ◽  
pp. 51836
Author(s):  
Afiqah Omar ◽  
Ruey Shan Chen ◽  
Dalila Shahdan ◽  
Sahrim Ahmad
Keyword(s):  
Water Absorption ◽  
Thermal Water ◽  
Modified Montmorillonite

Development of Siloxane Based Tetraglycidyl Epoxy Nanocomposites for High Performance Applications—Study of the Mechanical, Thermal, Water Absorption and Flame Retardant Behaviour

Silicon ◽  
2011 ◽  
Vol 3 (1) ◽  
pp. 45-52 ◽  
Author(s):  
K. Shree Meenakshi ◽  
E. Pradeep Jaya Sudhan ◽  
S. Ananda Kumar ◽  
M. J. Umapathy
Keyword(s):  
Water Absorption ◽  
Flame Retardant ◽  
High Performance ◽  
Thermal Water ◽  
Epoxy Nanocomposites

Polyacrylate/(Chitosan Modified Montmorillonite) Nanocomposite: Water Absorption and Photostability

2005 ◽  
Vol 13 (2) ◽  
pp. 167-172 ◽  
Author(s):  
Haixia Qiu ◽  
Jiugao Yu ◽  
Junli Zhu
Keyword(s):  
Water Absorption ◽  
Driving Force ◽  
Water Retention ◽  
Chemical Interaction ◽  
Barrier Properties ◽  
Mercury Lamp ◽  
Absorption Loss ◽  
Oh Groups ◽  
Modified Montmorillonite ◽  
Ft Ir

Montmorillonite (MMT) was modified with chitosan (CS). The XRD and FT-IR analyses showed that the CS chains had intercalated into the MMT sheets and the strong chemical interaction between the Si-O bonds from MMT and the -NH2, -CONH- and -OH groups from CS was the driving force for intercalation. Polyacrylate (PAA)/modified MMT superabsorbent composites were fabricated by effectively dispersing the modified MMT in acrylic acid solution and polymerizing the acid. Compared with PAA, the water absorption of the PAA/modified MMT composite was increased by 91 g/g. This might arise from the combined effect of the hydrophilic groups from PAA and CS and the strong interaction between modified MMT and PAA; this explanation was consistent with the FT-IR spectrum. The introduction of unmodified MMT to PAA caused a 171 g/g water absorption loss. The rate of water absorption of PAA/modified MMT superabsorbents was decreased and the capacity for water retention was higher than that of PAA and PAA/unmodified MMT. This could be explained by the barrier properties of the nanodispersed MMT sheets in the PAA/modified MMT composites. After exposure to a high pressure mercury lamp for 20 days, PAA/PAA/MMT and PAA/modified MMT superabsorbents had losses in water absorption of 12.1%/8.6%/5.8% respectively.

Influence of wood dust fillers on the mechanical, thermal, water absorption and biodegradation characteristics of jute fiber epoxy composites

2019 ◽  
Vol 27 (1) ◽  
Author(s):  
S. Dinesh ◽  
P. Kumaran ◽  
S. Mohanamurugan ◽  
R. Vijay ◽  
D. Lenin Singaravelu ◽  
...  
Keyword(s):  
Water Absorption ◽  
Thermal Water ◽  
Epoxy Composites ◽  
Jute Fiber ◽  
Wood Dust

Effect of ink and paperboard characteristics on flexographic print quality based on print density

TAPPI Journal ◽  
2011 ◽  
Vol 10 (9) ◽  
pp. 7-13
Author(s):  
KHODADAD MALMIRCHEGINI ◽  
FARSHAD SARKHOSH RAHMANI
Keyword(s):  
Water Absorption ◽  
Significant Influence ◽  
Particle Diameter ◽  
Print Quality ◽  
Printing Technology ◽  
Plastic Films ◽  
Printing Inks ◽  
Packaging Industry ◽  
Solids Content ◽  
Density Results

Flexography is an evolving printing technology that is suitable for printing on coated and uncoated paperboard and board, nonporous substrates including metalized and paperboard foils, and plastic films used especially in the packaging industry. This study evaluated the effect of paperboard and ink characteristics on flexographic print density in paperboard. Three commercial paperboards from different companies were prepared: brown kraft from Thailand, white kraft from Spain, and test liner from Iran. Four samples of process print inks from Iran were used in this investigation. Paperboard properties, such as roughness and water absorption, and ink characteristics, including solids content, PH and particle diameter, were measured. The inks were printed on paperboards using a roll no.15 applicator with a blade metering device, and the print densities were measured. Results showed that solids content, pH, and particle diameter of printing inks influenced print density, while the roughness and water absorption of the three types of paperboard had no significant influence on print density. Results also illustrated that two levels of ink viscosity (25–30 and 50–55 mPa·s) were insignificant to print density.

Effects of Natural Fiber Reinforcement on Water Absorption of Compressed Stabilized Earth Blocks

2012 ◽  
Vol 2 (11) ◽  
pp. 165-167
Author(s):  
B.O .Ugwuishiwu B.O .Ugwuishiwu ◽  
◽  
B.O. Mama B.O. Mama ◽  
N. M Okoye N. M Okoye
Keyword(s):  
Water Absorption ◽  
Natural Fiber ◽  
Fiber Reinforcement ◽  
Earth Blocks

Effect of Water Absorption Temperature on Space Charge Profiles in Paper/phenol-resin Composites for Printed Circuit Boards

2008 ◽  
Vol 128 (9) ◽  
pp. 585-590 ◽  
Author(s):  
Yasutsune Echigo ◽  
Masashi Natsui ◽  
Takashi Maeno ◽  
Yoshimichi Ohki
Keyword(s):  
Space Charge ◽  
Water Absorption ◽  
Printed Circuit Boards ◽  
Resin Composites ◽  
Circuit Boards ◽  
Phenol Resin ◽  
Printed Circuit ◽  
Effect Of Water

Influence of Water Absorption on The Selected Properties of Hemp Hurds Composites

2015 ◽  
Vol 10 (1) ◽  
pp. 123-132
Author(s):  
Lucia Kidalova ◽  
Nadezda Stevulova ◽  
Eva Terpakova
Keyword(s):  
Water Absorption ◽  
Influence Of Water

Moisture diffusivities evaluated at high moisture levels from a series of water absorption tests

10.1617/13645 ◽  
2005 ◽  
Vol 35 (247) ◽  
Author(s):  
M. Janz
Keyword(s):  
Water Absorption ◽  
High Moisture
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