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| Study on Material Characteristics and Pulping Properties of Pinus Elliottii×P. Caribaea with Different Ages |
| Received:July 07, 2022 |
| DOI：10.11980/j.issn.0254-508X.2023.01.007 |
| Key Words:pinus elliottii×p. caribaea tree age fiber morphology chemical composition kraft cooking |
| Fund Project:广东省植物资源生物炼制重点实验室基金（2021GDKLPFR-K02）；广东省重点领域研发计划“现代种业”重点专项（2020B020215001）。 |
| Author Name | Affiliation | Postcode | | HUANG Jiangtao* | State Key Lab of Pulp and Paper Engineering, South China University of Technology, Guangzhou, Guangdong Province
510640
Guangdong Provincial Key Lab of Plant Resources Biorefinery, Guangzhou, Guangdong Province, 510006 | 510006 | | XU Jun | State Key Lab of Pulp and Paper Engineering, South China University of Technology, Guangzhou, Guangdong Province
510640
Guangdong Provincial Key Lab of Plant Resources Biorefinery, Guangzhou, Guangdong Province, 510006
Qingyuan Huayan New Material Technology Co., Ltd., Qingyuan, Guangdong Province, 511500 | 511500 | | LI Jun | State Key Lab of Pulp and Paper Engineering, South China University of Technology, Guangzhou, Guangdong Province
510640 | 510640 | | LI Yiliang | Guangdong Provincial Key Lab of Silviculture, Protection and Utilization/Guangdong Academy of Forestry, Guangzhou, Guangdong Province, 510520 | 510520 | | LIN Changming | Taishan Hongling Seed Orchard, Taishan, Guangdong Province, 529200 | 529200 | | LIAO Sihuang | State Key Lab of Pulp and Paper Engineering, South China University of Technology, Guangzhou, Guangdong Province
510640 | 510640 | | HE Zhuocheng | State Key Lab of Pulp and Paper Engineering, South China University of Technology, Guangzhou, Guangdong Province
510640 | 510640 | | HUANG Jie | State Key Lab of Pulp and Paper Engineering, South China University of Technology, Guangzhou, Guangdong Province
510640 | 510640 |
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| Abstract:The chemical composition and fiber morphology of 6 kinds of fast-growing pinus elliottii×p. caribaea with different ages from 4 to 14 years were studied， and their kraft pulping properties at same cooking conditions were evaluated. The results showed that the holo-cellulose content of pinus elliottii×p. caribaea gradually increased with the increasing of tree ages， and was stabilized at （74±3）% with tree age more than 10 years. Lignin content increased slightly in the early growth stage of the trees， whereas decreased after tree age more than 8 years. In addition， the phenyl ethanol extraction content among the few components increased rapidly after tree age more than 10 years， whereas other components content changed irregularly. The average fiber length of pinus elliottii×p. caribaea wood was 2~3 mm， and the draw ratio was more than 58， which gradually increased with the increase of tree ages. Meanwhile， the pulp from pinus elliottii×p. caribaea with a tree age more than 10 years had a lower kappa value and a higher viscosity， which were more economic efficient to pulping and paper making. |
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