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Table 2 Volume calculated by using Eq. (2) and shrinkage percentage, with standard deviation calculated for a student law of 0.95

From: Comparison of polymers to enhance mechanical properties of microneedles for bio-medical applications

Master mould Volume (106 µm3) V/V total Shrinkage (%)
  148   
HA
 1%(w/w) 142 ± 0.02 0.96 3.6
 3%(w/w) 134 ± 0.003 0.91 8.9
 5%(w/w) 144 ± 0.001 0.98 2.4
CMC
 1%(w/w) 150 ± 0.003 1.02 0.0
 3%(w/w) 137 ± 0.003 0.93 7.2
 5%(w/w) 105 ± 0.006 0.71 28.6
Alginate
 1%(w/w) 128 ± 0.2 0.87 13.0
 3%(w/w) 115 ± 0.003 0.78 21.8
 5%(w/w) 105 ± 0.003 0.71 29.2