Results 241 to 250 of about 113,690 (278)
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Thickness‐dependent swelling of molecular layer‐by‐layer polyamide nanomembranes
Journal of Polymer Science, Part B: Polymer Physics, 2017ABSTRACTThe thickness‐dependent water vapor swelling of molecular layer‐by‐layer polyamide films is studied via specular X‐ray reflectivity. The maximum swelling ratio of these ultrathin films scale inversely with thickness but more importantly show a dual‐mode sorption behavior characterized by Langmuir‐like sorption at low relative humidity and ...
Edwin P Chan, Stephen C Lee
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Hygroscopic thickness swelling rate of composites from sawdust and recycled plastics
Wood Science and Technology, 2007The thickness swelling rates of compression molded wood plastic composites (WPCs) prepared from 50% by weight sawdust and 50% by weight virgin and/or recycled plastics (HDPE and PP) were studied. Thickness swelling rates of the manufactured WPCs were evaluated by immersing them in water at room temperature and monitoring thickness changes for several ...
Saeed Kazemi Najafi +2 more
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Improving the Thickness-Swelling (TS) of Castor-Stalk Based Panel
Advanced Materials Research, 2011 Castor-oil stalk is one kind of excellent woody materials, and the thickness swelling ( TS ) of the castor-oil stalk based panel with Urea- formaldehyde resin ( UF ) cannot meet the requirement of the Standard of People’s Republic of China. the TS of the panel was improved with wax emulsion.Results showed that the mechanical properties and the TS of ...
Xiao Ping Li, Ding Guo Zhou, Si Qun Wang
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Hybrid composites made from recycled materials: Moisture absorption and thickness swelling behavior
Bioresource Technology, 2010In this research, hybrid composite materials were made from the combination of recycled newspaper fiber (RNF) and poplar wood flour (PWF) as reinforcement, recycled polypropylene (RPP) as polymer matrix, and maleated polypropylene (MAPP) as coupling agent, by using injection molding.
Alireza Ashori, Shabnam Sheshmani
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Contribution of wood fiber hygroexpansion to moisture induced thickness swelling of composite plates
Polymer Composites, 2009 AbstractOne of the main drawbacks of wood fiber‐based composite materials is their propensity to swell due to moisture uptake. Because the wood fibers are usually the main contributor to hygroexpansion, it is of interest to quantify the hygroexpansion coefficient of wood fibers, to compare and rank different types of fibers. This investigation outlines
Karin M. Almgren +2 more
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Swelling of Thick Polymer Brushes Investigated with Ellipsometry
Langmuir, 1999We have investigated the swelling of a polystyrene brush in cyclohexane at varying temperatures with angle-dependent ellipsometry. The brush was grown in situ on the base of a high index prism by the “grafting from” technique. In the dry state it has a thickness of d = 134 nm. At the θ temperature it swells to about 600 nm.
Habicht, J. +3 more
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Thickness swelling and density variation in aspen flakeboards
Wood Science and Technology, 1991This paper reports the relationship between thickness swelling and density in labmade aspen flakeboards. The boards were manufactured with several levels of initial mat moisture content and urea resin content. Weight increase and thickness swelling at 12 locations on each board were recorded under specified environmental conditions over a period of 71 ...
J.Y. Liu, J.D. McNatt
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Thickness Swelling and Water Absorption Character of Laminate Floor
Advanced Materials Research, 2013Laminate floor coverings, with fiberboard in the middle layer, are hygroscopic which caused potential dimension instability. The paper tested thickness swelling (TS) and water absorption (WA) of 10 commercial laminate floors (LF) according to G/T 18102-2007 (GB/T) and LY/T 1611-2011(LY/T) and analyzed correlation between them.
Hai Xia Yu +3 more
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The Structure and Swelling of Corneal Scar Tissue in Penetrating Full-Thickness Wounds
Cornea, 2004The purpose of this study was to determine corneal thickness and to examine the collagen and proteoglycans in full-thickness corneal scars up to 16 months following wounding.Ultrasound pachymetry was used to measure the depths of penetrating central scars and their surrounding areas in 16 rabbit corneas. Measurements were taken at regular intervals: 5,
Che J, Connon, Keith M, Meek
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Moisture Absorption and Thickness Swelling Behaviour of Sugar Palm Fibre Reinforced Thermoplastic Polyurethane [PDF]
Procedia Engineering, 2017 Composite materials were made from sugar palm fibre (SPF) and thermoplastic polyurethane (TPU) polymer, by melt compounding method using Haake Polydrive R600 internal mixer and followed by hot-pressing moulding.
A Atiqah, Mohammad Jawaid, M R Ishak
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