CCI2014050746

-86-

Collagen shrinkage temperatures

trial 1 trial 2 txial 3 trial 4 mean

old leather	A	47	- 50	50	- 52	47	- 49			49.2
	B	41	- 46	39	- 47	41	- 47			43.5
	C	41	- 46	38	- 49	40	- 45			43.2
new calf	A	69	- 73	76	- 78	72	- 76	69	- 74	73.4
	B	64	- 68	71	- 73	71	- 74			70.2
	C	65	- 69	68	- 72	67	- 71			68.7
new - 2.35 X	A	75	- 77	73	- 76	72	- 76			74.8
10^-5 Cu	B	69	- 71	70	- 72	69	- 72	68	- 70	70.1
	C	69	- 71	69	- 72	66	- 69	69	- 70	69.4
new - 4.70 X	A	71	- 76	72	- 75	72	- 75	71	- 74	73.3
10-5 Cu	B	62	- 67	68	- 72	69	- 71	67	- 70	68.3
	C	62	- 67	67	- 71	69	- 71	66	- 72	68.1

Table 4: Collagen shrinkage temperatures

PORCE - kg/cm

			mean force	rangę
old leather		A	12.72	5.61	- 25.88
		B	13.19	11 .83	- 17.54
		C	16.57	7.72	- 25.20
new calf		A	19.39	10.77	- 25.39
		B	13.18	5.78	- 21.64
		C	13.40	5.81	- 23.33
new - r		A	30.11	26.97	- 40.07
2.25X10 ^J	Cu	B	31 .46	25.06	- 41.60
		C	32.06	26.06	- 38.80
new - r		A	30.86	21 .23	- 38.58
4.70X10 ^J	Cu	B	31 .46	21 .90	- 40.61
		C	32.05	36.24	- 37.36

Table 5: Tensile strength

CL PUBLICATION

Central Research Laboratory for Objects of Art and Science Gabriel Metsustraat 8, 1007 AC Amsterdam.

P.O. Box 5132, 1007 AC Amsterdam.