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    Author(s): Anton D. Pugel; Eddie W. Price; Chung-Yun Hse
    Date: 1990
    Source: Forest Products Journal 40(3):57-61
    Publication Series: Scientific Journal (JRNL)
    PDF: Download Publication  (1.5 MB)


    Southern pine juvenile and mature wood were processed into three composites: flakeboard, particleboard, and fiberboard. The durability of these composites was assessed by subjecting specimens to an ovendry-vacuumpressure-soak (ODVPS) treatment, and then evaluated for modulus of elasticity, modulus of rupture, and internal bond. Overall, juvenile wood composites had values equivalent to or better than the mature wood composites. The dimensional stability of the composites was assessed by measuring the thickness swell and linear expansion of specimens subjected to an ODVPS treatment and specimens exposed to a single cycle of 30 to 90 percent relative humidity. Juvenile wood composites had significantly greater linear expansion than mature wood composites. Thickness swell was also greater for the juvenile wood composites after the ODVPS treatment. Of the three composite types evaluated, fiberboard properties were least affected by differences between the mature and juvenile wood furnishes.

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    Pugel, Anton D.; Price, Eddie W.; Hse, Chung-Yun. 1990. Composites from southern pine juvenile wood. Part 2. Durability and dimensional stability. Forest Products Journal 40(3):57-61

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