Mechanical properties and moisture-related dimensional change of canvas paintings–canvas and glue sizing

Heritage Science

Table 2 Details of specimens prepared in various ways, investigated in the study

Sizing		Name	Amount of glue (kg/m²)	Thickness (mm)	Effective thickness of the fiber-glue layer (mm)		Description
Sizing		Name	Amount of glue (kg/m²)	Thickness (mm)	Weft	Warp	Description
Rabbit skin glue Kremer ref. 63028	Gel	PL canvas 63028 gel-sized	0.018	0.48	0.116	0.116	Canvas sized with glue gel (5% w/w) applied with a knife in the cold state. Two glue layers
	Liquid	PL canvas 63028 liquid-sized	0.025	0.52	0.121	0.121	Canvas sized with glue aqueous solution (15% w/w) applied with a brush in the warm state. Single glue layer
	Gel	PL canvas 63028 gel-sized + ground layer	–	0.75	–	–	Canvas sized with glue gel as described above with a further chalk-glue ground layer (92% PVC)
Rabbit skin glue Kremer ref. 63028	Gel	CTS 1111 canvas 63028 gel-sized	0.076	0.69	0.179	0.199	Canvas sized with glue gel (10% w/w) applied with a knife in the cold state
	Gel	CTS 2297 canvas 63028 gel-sized	0.078	0.67	0.141	0.141
	Liquid	CTS 1111 canvas 63028 liquid-sized	0.041	0.72	0.152	0.172	Canvas sized with glue aqueous solution (10% w/w) applied with a brush in the warm state
	Liquid	CTS 2297 canvas 63028 liquid-sized	0.036	0.61	0.112	0.112
Bone glue Kremer ref. 63000	Gel	CTS 1111 canvas 63000 gel-sized	0.055	0.73	0.163	0.183	Canvas sized with glue gel (10% w/w) applied with a knife in the cold state
	Gel	CTS 2297 canvas 63000 gel-sized	0.130	0.62	0.182	0.182
	Liquid	CTS 1111 canvas 63000 liquid-sized	0.066	0.77	0.171	0.191	Canvas sized with glue aqueous solution (10% w/w) applied with a brush in the warm state
	Liquid	CTS 2297 canvas 63000 liquid-sized	0.033	0.64	0.106	0.106