Effect of chlorine substitution in 4,4?-diaminodiphenylmethane hardener on shelf life and mechanical properties of epoxies

This paper describes production-readiness level of electrografted (eG) and chemical grafted (cG) layers deposited on a wide range of through silicon via (TSV) dimensions. Three layers are required to achieve via metallization: eG insulator, cG barrier, and eG copper seed. Complete characterization of each layer of the stack has been achieved, including electrical and mechanical properties. Impact on the 3D-IC design space of the electrografting nanotechnology optimized for highly conformal growth of TSV films is discussed. Four chemical baths are required to achieve the deposition of the three layers, shelf life, and bath monitoring strategy of each chemistry being presented in the last part of the paper. Some preliminary results of copper plating directly on top of the cG barrier are also reported.

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Effect of postharvest treatments on shelf life and quality of tomato

Bangladesh Journal of Agricultural Research ◽

10.3329/bjar.v33i4.2291 ◽

1970 ◽

Vol 33 (4) ◽

pp. 579-585 ◽

Cited By ~ 7

Author(s):

TAA Nasrin ◽

MM Molla ◽

M Alamgir Hossaen ◽

MS Alam ◽

L Yasmin

Keyword(s):

Shelf Life ◽

Substantial Reduction ◽

Life Quality ◽

Storage Conditions ◽

Treatment Combination ◽

Postharvest Treatments ◽

Compositional Changes ◽

And Storage ◽

Effect Of Chlorine

An experiment was conducted to study the effect of chlorine, packaging and storage conditions on quality and shelf life of tomato. Tomato treated with chlorine; packed in perforated (0.25%) polyethylene bag and kept at ambient (Temperature 20-25Â°C & relative humidity 70-90%) condition resulted in substantial reduction in losses caused by decay and weight loss. This treatment combination also considerably delayed compositional changes in TSS, total sugar, reducing sugar, vitamin-C, B-carotene, etc. Under this condition, shelf life of tomato had extended upto 17 days as compared to non-treated and kept in ambient condition without packaging or packed in gunny bag for 7 days only. Key Words: Postharvest treatments, shelf-life, quality of tomato. doi: 10.3329/bjar.v33i4.2291 Bangladesh J. Agril. Res. 33(4) : 579-585, December 2008

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Effect of chlorine substitution on the structure and activity of 4-phenylthiosemicarbazide: crystal and molecular structure of 4-(4-chlorophenyl)thiosemicarbazide

Journal of the Chemical Society Perkin Transactions 2 ◽

10.1039/p29840001729 ◽

1984 ◽

pp. 1729 ◽

Cited By ~ 24

Author(s):

Asok Kumar Nandi ◽

Siddhartha Chaudhuri ◽

Sunil Kumar Mazumdar ◽

Saktiprosad Ghosh

Keyword(s):

Molecular Structure ◽

Crystal And Molecular Structure ◽

Chlorine Substitution ◽

Structure And Activity ◽

Effect Of Chlorine

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Utilization Of Sugarcane Bagasse Cellulose-Clay Nanocomposite As A Biodegradable And Antibacterial Packaging Material To Extend The Food's Shelf Life

Khazanah ◽

10.20885/khazanah.vol12.iss2.art43 ◽

2020 ◽

Vol 12 (2) ◽

Author(s):

Nadya Fitriani Pitaloka ◽

◽

Ardilla Sriwijayanti ◽

Santi Anisa ◽

Irne Dyah Ayu Wijayanti ◽

...

Keyword(s):

Mechanical Properties ◽

Antibacterial Activity ◽

Water Vapor ◽

Shelf Life ◽

Sugarcane Bagasse ◽

Toxicity Test ◽

Nanocomposite Film ◽

Food Packaging ◽

Antibacterial Properties ◽

Vapor Permeability

Food packaging materials derived from fossil fuels are single-use products that harm the health of living things when disposed of by releasing toxic byproducts. Many communities are starting to be more environmentally friendly by using biopolymers. However, some biopolymers do not have antibacterial properties, thus shortening the food’s shelf life and not applicable in food packaging. Therefore, the purpose of this work is to develop a biodegradable and antimicrobial food packaging from sugarcane bagasse and clay that degrades over time without compromising the food’s shelf life. Cellulose acetate butyrate (cab) was prepared in an amimcl ionic liquid system from sugarcane bagasse. Then the cab was plasticized using peg, resulting a film. Besides, montmorillonite (mmt) clay was modified with aryl ammonium cations using a cation exchange technique to form bmmt. The nanocomposite film was prepared by mixing the plasticized cab and bmmt, then heated at 50c to evaporate the solution. The nanocomposite film was obtained as a prototype of food packaging. Several tests were conducted including mechanical properties, water vapor permeability (wvp), antimicrobial and toxicity test. Based on research by saha et.al, 2008, the nanocomposite film with the cag, peg and bmmt 100:20:3 composition gave the best mechanical properties because of the agglomeration of bmmt. Also, the nanocomposite film had promising wvp properties as a plastic because the clay layers reduced the water vapor diffusion across the polymer matrix. The toxicity test showed that this nanocomposite film was compatible in human blood. Lastly, this nanocomposite film has antibacterial activity against b. Subtilis and p. Cepacia because of the bmmt presence. In conclusion, the nanocomposite film from sugarcane bagasse and clay containing cag, peg and bmmt 100:20:3 is a promising material for a biodegradable and antimicrobial food packaging, because it has sufficient mechanical properties, antibacterial activity, low wvp and is non-toxic.

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