Scientia Silvae Sinicae ›› 2001, Vol. 37 ›› Issue (2): 108-111.doi: 10.11707/j.1001-7488.20010217
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Fang Guizhen,Li Jian,Kong Man,Tohru Uehara,Takeshi Furuno
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Abstract:
Polycarboxylic acids acted as esterification agents and inorganic salts acted as catalyst in the wood crosslinking reaction. This new and soluble crosslinking system is poison free and pollution free system. In this paper, the CP/MAS13C NMR spectra of wood components were determined, main chemical shifts were signed and the changes of chemical constrcture were analyzed in esterification between wood and polycarboxylic by CP/MAS13C NMR spectra. Results showed: after esterification, the ratios of carboxyl and ester carbon increased, the ratios of aromatic and hydroxyl carbon decreased and the ratios of alkyl carbon changed with carboxyl carbon. This conclusion is the same as that by FTIR and ESCA spectra.
Key words: Polycarboxylic acids, Esterification reaction, CP/MAS13C NMR
Fang Guizhen;Li Jian;Kong Man;Tohru Uehara;Takeshi Furuno. THE STUDY ON ESTERIFICATION REACTION BETWEEN WOOD AND POLYCARBOXYLIC ACID BY CP/MAS13C NMR-SPECTRA[J]. Scientia Silvae Sinicae, 2001, 37(2): 108-111.
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URL: http://www.linyekexue.net/EN/10.11707/j.1001-7488.20010217
http://www.linyekexue.net/EN/Y2001/V37/I2/108
