[Factors of influence on quality evaluation of adhesive property on cataplasma].
OBJECTIVE
To provide experimental proof for establishing a standard quality evaluation method of adhesive property on Cataplasma by studying the factors of effect on evaluation of adhesive quality on Cataplasma.


METHODS
With 180 degrees peel off test, tensile shear and adhesive force test, the influence caused by the square of samples, texture of fabric base and the moisture loss was tested with multifunctional material tester and first stickiness tester.


RESULTS
The peel off strength of 40 mm wide sample is 26% lower than that of the 20 mm wide sample (P < 0.05), and tensile shear strength had no significant difference. The peel off strength of transverse fabric base was higher than that of lengthways fabric base (P < 0.01). The tensile shear strength of transverse fabric base was lower than that of lengthways fabric base (P < 0.05). The sample with 35% moisture lost had a maximum tensile shear strength and the sample which lost 30% moisture lost had a maximum peel off strength; The sample which lost 20% moisture lost had a maximum first adhesive force.


CONCLUSIONS
The square of samples, the texture of fabric base and the moisture loss of samples can all affect the evaluation of adhesive quality on Cataplasma.
Kong
Huan-yu
HY
Institute of Orthopaedics and Traumatology, China Academy of TCM, Beijing 100700, China. konghy@263.net
Zhou
Hui
H
Zhong
Hong-gang
HG
Wang
De-long
DL
Wang
Xuan
X
D000268:Adhesiveness; D004365:Drugs, Chinese Herbal / Q000008:administration & dosage* / Q000592:standards; D008422:Materials Testing / Q000379:methods; D009823:Ointment Bases / Q000737:chemistry; D009824:Ointments / Q000737:chemistry* / Q000592:standards; D011786:Quality Control; D013718:Tensile Strength
D004365:Drugs, Chinese Herbal; D009823:Ointment Bases; D009824:Ointments