蜘蛛大壶状腺丝的反复拉伸力学行为和性能

蒋平, 吴丽华, 吕太勇, José Pérez-Rigueiro, 王安萍

Repetitive Stretching Tensile Behavior and Properties of Spider Major Ampullate Gland Silk

JIANG Ping, WU Lihua, LV Taiyong, Pérez-Rigueiro José, WANG Anping

表1 蜘蛛大壶状丝拉曼光谱在反复拉伸过程中特征谱带及其波谱数的变化

Table 1 Changes of characteristic bands and spectral numbers of spider Mas during repeated stretching

Control	9th- 5 min	9th- 2 h	9th- 20 h	14th- 15 min	23rd- 5 min	27th- 5 min	34th- 5 min	Assignment^{[30, 31]}
1693	1697	1697	-	1697	1697	1694	1697^*	Amide Ⅰ, C=O in antiparallel β-sheet
1678	-	-	1671	1669	1672	1669	1669	Amide Ⅰ, C=O in β-sheet or random coil
-	1655^*	1655	-	1651	-	-	-	Amide Ⅰ, α-helix or random coil poly(E)
1636 1615 -	1636 1615 1593	1636 1613 1593	1636 1613 -	1637 1611 1595	1636 1615 1597^*	1636 1615 1594	1633 1610 1594	Amide Ⅰ, β-sheet aromatic ring s in F and Y
1560	1558	1567	1567	1555/1545	1567	1567	1562	Amide Ⅱ, C-N α-helix or random coil
1523	1523	1523	1523	1523	1523	1523	1522	Amide Ⅱ, β-sheet
1449	1449	1449	1443	1452	1445	1445	1445	Poly(A) CH₃ ab, poly(AG) CH₂ b
-	1440	-	-	1442	-	-	-	COO- ss in D and E
1386 1362	1386 1362	1390 1362	1386 1362	1385 1362	1386 1361	1386 1361	1381 1360	Amide Ш, H^ab, N-H ib
1335	1335	1328	1324	1325	1325	1325	1318	Amide Ш, CH₃ sb, H^ab
1277	1277	1277	1277	1277	1277	1277	1276	Amide III: N-H ib, C=O ib, C-C s
	1243	1237	-	1227	1224	1219	1220	Amide Ш, N-H ib, CH₂ tw
-	1186	-	-	1186	-	-	-	Amide Ш, aromatic ring C-H ib
-	-	-	1147	1147	-	-	-	H ^a b
1117	1123	1123	1123	1123	1123	1123	-	C-C ^β s
1096	1096	1096	1096	1096	1095	1095	1095	C-C ^β s
1045	1045	1045	1045	1046	1045	1045	1039	C-C ^β s
-	1002	1003	1003	1004	1002	1002	997	Aromatic ring br in F and Y
968 924 904	951 924 904	962 924 904	962 924 904	947 926 904	947 918^* 906	948 926^* 906	946 - -	Poly-alanine CH₃r, N-C ^α s, C-C s, C=O s