【摘要】 考察了微波功率、pH值、H₂O₂用量和反应时间对聚乙烯醇降解反应的影响.实验表明,在微波辐射条件下,微波功率为800W,辐射时间为1min,pH值为3,H₂O₂用量为依22gH₂O₂·100g^-1PVA时,5ml聚乙烯醇（7%）的平均聚合度能够在1min内降至67.与常规油浴加热相比,反应速度提高10—20倍.更多还原

【Abstract】 Under microwave irradiation the effect of microwave power, pH, H2O2 amount and reaction time on polyvinyl alcohol (PVA) degradation has been investigated in this paper. It was found that 5ml 7% PVA degree of polymerization (DP) was quickly degraded to 67 under microwave power 800W, ph = 3, 22g H202·100g-1 PVA in 1min. Compared with conventional oil-bath heating, the degradation rate of PVA is accelerated 10-20 times under microwave irradiation.更多还原