Physical properties of polyethylene-wood fiber-clay nanocomposites

2010 ◽  
Vol 118 (6) ◽  
pp. 3255-3259 ◽  
Author(s):  
Shabnam Sheshmani ◽  
Alireza Ashori ◽  
Yahya Hamzeh
2012 ◽  
Vol 24 (1) ◽  
pp. 45-52 ◽  
Author(s):  
Dong Wook Chae ◽  
Jung Ho Lim ◽  
Jae Sik Seo ◽  
Byoung Chul Kim

2012 ◽  
Vol 40 (6) ◽  
pp. 406-417 ◽  
Author(s):  
Han-Min Park ◽  
Hwang-Sun Heo ◽  
Eun-Jong Sung ◽  
Kyeong-Han Nam ◽  
Jae-Seop Lim

HortScience ◽  
2013 ◽  
Vol 48 (6) ◽  
pp. 732-737 ◽  
Author(s):  
Stephanie A. Beeks ◽  
Michael R. Evans

The physical properties of new 15.2-cm plastic and comparably sized bioplastic, solid ricehull, slotted ricehull, paper, peat, dairy manure, wood fiber, rice straw, and coconut fiber containers were determined. Additionally, the physical properties of these containers were determined after being used to grow ‘Rainier Purple’ cyclamen (Cyclamen persicum L.) in ebb-and-flood benches for 15 weeks in a greenhouse environment. The punch strength of new coconut fiber containers was the highest of the containers. The used plastic containers had strengths of 228.0, 230.5, and 215.2 N for the bottom, middle, and top zones, respectively. The used peat, dairy manure, and wood fiber containers had strengths of less than 15 N for each zone. Tensile strength of all new containers was 10 kg. The plastic, bioplastic, solid ricehull, slotted ricehull, paper, and coconut fiber containers had used strengths that were similar to plastic containers. Total water used for wood fiber containers was higher than plastic containers. Irrigation intervals for plastic containers were similar to bioplastic, solid ricehull, slotted ricehull, paper, and coconut fiber containers. The irrigation interval for plastic containers was 1.32 days and the wood fiber container had the shortest irrigation interval at 0.61 day. Container absorption for coconut fiber containers was 255 mL and was higher than plastic containers. Wood fiber container absorption was 141 mL and lower than plastic containers. Plastic, bioplastic, solid ricehull, and slotted ricehull containers had no visible algal or fungal growth. The wood fiber containers had 79% of the container walls covered with algae or fungi and the bottom and middle zones had 100% algae or fungi coverage. The bottom zone of rice straw, dairy manure, and peat containers also had 100% algae or fungi coverage. The bioplastic, solid ricehull, and slotted ricehull containers in this study proved to be good substitutes for plastic containers. These containers retained high levels of punch and tensile strength, had no algal and fungal growth, and required a similar amount of solution as the plastic containers to grow a cyclamen crop. The peat, dairy manure, wood fiber, and rice straw containers proved not to be appropriate substitutes for plastic containers because of the low used strengths, high percentage of algal and fungal coverage, and shorter irrigation intervals as compared with plastic containers.


2007 ◽  
Vol 28 (2) ◽  
pp. 210-214 ◽  
Author(s):  
Jennifer A. Lee ◽  
Marianna Kontopoulou ◽  
J. Scott Parent

2010 ◽  
Vol 118 (1) ◽  
pp. 452-461 ◽  
Author(s):  
Yoon H. Lee ◽  
Takashi Kuboki ◽  
Chul B. Park ◽  
Mohini Sain ◽  
Marianna Kontopoulou

BioResources ◽  
2021 ◽  
Vol 16 (4) ◽  
pp. 8258-8272
Author(s):  
Yang Zhao ◽  
Qinpeng Shen ◽  
Yuanxin Duan ◽  
Shuyin Wu ◽  
Ping Lei ◽  
...  

Polylactic acid is a biodegradable thermoplastic polyester derived from renewable polysaccharides. In this work, softwood fibers were used to reinforce the paper sheet made from polylactic acid fibers, thus addressing the challenges regarding low density, rough surface, and weak strength. The impact of wood fibers and calendering on the physical properties (density, roughness, tensile strength, and folding endurance) of the composite paper were identified. Furthermore, the morphology of papers with different fiber contents and those that had been calendered was characterized with a scanning electron microscope. The use of wood fibers resulted in the improvement of the physical properties of the polylactic acid paper, and the enhanced refining of wood fibers had a favorable role in improving paper density, smoothness, and mechanical strength. The tensile index increased 37.9% when the beating degree of wood fibers increased from 25 to 60 °SR. After calendering, the density, smoothness, tensile strength, folding endurance, and air barrier property of the paper were improved 60.2%, 45.8%, 15.5%, 148.1%, and 79.4%, respectively. The calendering-based papermaking process involving the combined use of wood fibers and polylactic acid fibers would be a promising strategy for designing composite materials for tailorable end-uses.


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