Page 220 - 《水产学报》2025年第12期

邱昱，等 水产学报, 2025, 49(12): 129717

PBAT, 未降解 PBAT, undegraded PBAT, 未降解 PBAT, undegraded
PBAT, pH=7 PBAT, pH=7
PBAT, pH=8 PBAT, pH=8
PBAT, pH=9 PBAT, pH=9
0.5 PBAT/淀粉, 未降解 PBAT/starch, undegraded 0.5 PBAT/淀粉, 未降解 PBAT/starch, undegraded
PBAT/淀粉, pH=7 PBAT/starch, pH=7 PBAT/淀粉, pH=7 PBAT/starch, pH=7
PBAT/淀粉, pH=8 PBAT/starch, pH=8 PBAT/淀粉, pH=8 PBAT/starch, pH=8
0.4 PBAT/淀粉, pH=9 PBAT/starch, pH=9 0.4 PBAT/淀粉, pH=9 PBAT/starch, pH=9
热流/(J/g) heat flow 0.3 热流/(J/g) heat flow 0.3

0.2
0.2
0.1 0.1

0 0
−50 0 50 100 150 200 −50 0 50 100 150 200
温度/°C 温度/°C
temperature temperature
(a) (b)
图 2 20 ℃ (a) 和 50 ℃ (b) 条件下不同 pH 梯度降解 5 个月单丝的 DSC 热学性能曲线

Fig. 2 DSC thermal performance curve of monofilament degradation at 5 months under
different pH gradients at 20 ℃ (a) and 50 ℃ (b)

50 PBAT 50 PBAT
PBAT/淀粉 PBAT/starch
PBAT/淀粉 PBAT/starch
40
40
海水降解失重率/% weight loss rate of seawater degradation 30 海水降解失重率/% weight loss rate of seawater degradation 30

20
20
10
10
0
8
7
8
pH 9 0 7 pH 9
(a) (b)
图 3 20 ℃ (a) 和 50 ℃( b) 条件下不同 pH 降解条件下降解 4 个月的 PBAT 单丝和 PBAT/淀粉复合单丝的失重率
Fig. 3 Mass loss rate of PBAT monofilament and PBAT/starch composite monofilament degraded for
4 months under different pH degradation conditions at 20 ℃ (a) and 50 ℃ (b)

表 2 不同降解条件下单丝的失重
Tab. 2 Weight loss rate of composite fiber under different degradation conditions %

温度与pH PBAT单丝失重率 PBAT/淀粉复合单丝失重率 失重率增量
temperature and pH weight loss rate of PBAT monofilament weight loss rate of PBAT/starch composite monofilament weight loss rate increment
20 ℃，pH=7 18.73 24.86 6.13
20 ℃，pH=8 27.47 26.66 −0.81
20 ℃，pH=9 31.27 37.12 5.85
50 ℃，pH=7 26.60 30.04 3.44
50 ℃，pH=8 29.65 35.23 5.58
50 ℃，pH=9 33.57 42.91 9.34

中国水产学会主办 sponsored by China Society of Fisheries https://www.china-fishery.cn
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