Holopulp Elements of Burmese Bamboos in Relation to Their Papermaking Properties

Abstract

ビルマ産および国内産の竹材数種を供試, それらから調製したホロパルプの構成要素の特徴を研究した。まず竹材ホロパルプの調製法を検討し, 過酢酸法が適していることを認めた。ホロパルプの篩別を行った結果, 繊維要素の殆んどは60および100メッシュ残留区分に, また非繊維状要素の大部分は100メッシュ通過区分に存在することが判明した。ホロパルプ収率および繊維要素の比率は3つのグループに分けることができ, この分類が竹材組織における維管束鞘の配列パターンと関連しているととが推定された。

The characteristics of holopulp elements from five major species of bamboo grown in Burma were studied in comparison with two major species of Japanese bamboo. Various methods to obtain the bamboo holopulps were examined and the peracetic acid method was found to be the suitable method. From the classification of holopulp, the fractions retained on 60 and 100 mesh screen were composed of fiber elements and the fraction passed through 100 mesh screen contained almost non-fibrous elements. Within the seven species of bamboo used in this experiment, the holopulp yield as well as the percentage of fiber elements can be divided into three groups and these groupings are related with the type of vascular bundle of bamboo tissue.