Forest Products from Latin America. Annotated Bibliography of ...

1978 May 21-26; Madison, WI. Madison, WI: U.S. De-
partment of Agriculture, Forest Service, Forest Products
Lab or at or y : 4 1 3-42 5.
A review is presented of work carried out at the Tropical
Products Institute on: the evaluation of plantation-grown
coniferous species, plantation-grown hardwoods, and poten-
tial seed trees. A bibliography of recent TPI publications is
included.
Palmer, E.R.; Gibbs, J.A. 1973. Pulping characteris-
tics of three trees of Pinus caribaea with different densi-
ties grown in Jamaica. Indian Pulp and Paper. 28(4/6):
25-30/6-14.
Palmer, E.R.; Gibbs, J.A. 1973. Pulping characteris-
tics of three trees of Pinus caribaea with different densities
grown in Jamaica. Rep. L 30. London, United Kingdom:
Tropical Products Institute. 24 p.
Three 10-year-old trees of P. caribaea var. hondurensis with
wood densities of 325, 390, and 480 kg/m 3 were pulped un-
der two alkali conditions (17.5 and 20 percent), resulting
in increased sulphate pulp yield, and decreased breaking
length and bursting strength, with increasing wood density.
Pulp Kappa numbers from the medium-density tree were
higher than those of the pulps from the trees with higher
density. No firm conclusions can be drawn from the small
test as to the potential value of such material for pulpwood,
but it seems that a pulp approaching the strength charac-
teristics of Southern Pine pulp could be made.
Palmer, E.R.; Gibbs, J.A. 1975. The pulping character-
istics of two samples of Pinus caribaea var. caribaea from
Cuba. Rep. L-41. London, United Kingdom: Tropical
Products Institute. 25 p.
Describes studies on the sulphate pulping of Pinus carib-
aea var. caribaea. Ten samples each were used from a nat-
ural forest about 20 years and a plantation of 12 years.
Extreme variability in density was noted within and be-
tween trees. Mean density was 607 kg/m 3 for the natural
stand and 433 kg/m3 for the plantation. The natural stand
had longer and narrower fibers with thicker cell walls than
those of the plantation. Cooking by the sulphate process
was slightly more difficult for the natural material than for
plantation wood and produced a bulkier pulp with higher
tearing strength and lower bonding properties. Both sam-
ples yielded less unbleached and bleached pulp, with lower
strength values than established coniferous pulpwoods. The
samples of P. caribaea var. caribaea tested were not very
promising as pulpwood.
Palmer, E.R.; Gibbs, J.A. 1976. Pulping characteristics
of Pinus caribaea from Belize. Rep. L-43. London, United
Kingdom: Tropical Products Institute. 43 p.
Palmer, E.R.; Gibbs, J.A. 1976. Pulping characteristics
of Pinus oocarpa grown on Mountain Pine Ridge, Belize.
Rep. L-44. London, United Kingdom: Tropical Products
Institute. 21 p.
Palmer, E.R.; Gibbs, J.A. 1978. Pulping characteris-
tics of six hardwoods from Guyana. Rep. L 50. London,
United Kingdom: Tropical Products Institute. 43 p.
Catostemma spp., Eperua falcata, Eschweilera sagotiana,
Licania venosa, Mora excelsa, and Pentaclethra macroloba
were pulped separately by the sulphate process, and mixed
in different proportions. At kappa number 18, pulp yields
were about 43 percent. Pulps were bulky, and had poor
bonding strength. Tearing strength was comparable with
or better than that from commercially used hardwoods.
Bleaching (CEHD) produced pulps with brightness of about
80 percent. Bleached pulps had strength characteristics
similar to unbleached pulps. Limited trials with NSSC
pulping yielded 70 percent with very poor strength prop-
erties. Data on bark/wood ratios, density, chemical compo-
sition, and fiber dimensions are shown.
Palmer, E.R.; Gibbs, J.A. 1978. Pulping characteris-
tics of Dicymbe altsoni from Guyana. Rep. L 51. London,
United Kingdom: Tropical Products Institute. 8 p.
Describes pulping results from one tree of D. altsoni. The
kraft pulp yield was 48.1 percent (kappa number 33.1) to
44.3 percent (kappa number 22.9). Bleaching (CEHD) pro-
duced pulp with a brightness of 83 percent. Data on bark
content, wood density, chemical analyses, and fiber dimen-
sions are presented.
Paula, J.E. de. 1977. Anatomy of woods from Amazonia
with a view to pulp and paper (Anatomia de madeiras da
Amazonia com vistas a polpa e papel). Acta Amazonica.
7( 2) :273-288.
Describes the morphology (fibre length, wall thickness, di-
ameter, and Runkel ratio) of the wood of 20 species. Seven-
teen species were found to be suitable for papermaking.
Paula, J.E. de. 1980. Amazonian timbers in relation to
their use for pulp and paper (Estudo de madeiras da Ama-
zonia visando o seu aproveitamento para polpa e papel).
Brasil Florestal. 10(42):25, 35-52.
Describes the physical and anatomical properties of 41
Brazilian woods for their pulp and paper potential. Among
the species examined are: Cassia grandis, Cassia reticulata,
Cordia goeldiana, Erism a bicolor, Goupia glabra, Parkia
ulei, Protium araguense, Schizolobium amazonicum, Simaba
cedron, Virola duckei, Virola flexuosa, Vochysia mariziana,
Virola multicostata, Virola multinervia, Virola oleifera, Vi-
rola surinamensis.
Paula, J.E. de. 1981. Internal structure of 16 species of
the flora of Brazil in relation to their possible use for al-
cohol, charcoal, coke, and paper production (Estudo das
estruturas internas das madeiras de dezesseis especies da
flora brasileira, visando seu approveitamento para prod-
ucao de alcool, carvao, coque e papel). Brasil Florestal.
11(47):23-50.
Describes the wood of 16 Brazilian species including:
Apuleia leiocarpa, Apuleia molaris, Caesalpinia ferrea, Cal-
listhene major, Calophyllum brasiliense, Copaifera langs-
dorfii, Cordia goeldiana, Maprounea guyanensis, Mimosa
artemisiana, Piptadenia macrocarpa, Qualea paraensis,
Spondias lutea, Tapirira guianensis, Virola multinervia,
Vochysia pyramidalis, Xylopia emarginata. The use of these
woods for alcohol, charcoal, coke, and paper is discussed.
Paz, J.; Rueda, F. 1981. Effect of the addition of anthro-
quinone in the soda and kraft processes, using insigne pine
wood (Efecto de la adicion de antraqinona en procesos a la
soda y kraft, usando madera de pino insigne). Torremolino,
Spain: 2d Congreso Latinoamericano de Celulosa y Papel:
2: 83-95.
95