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Nondestructive testing of defects in adhesive joints

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Table V Transport coefficients <strong>of</strong> block copolymers <strong>in</strong> water<br />

Block Copolymer cm 2 s -1<br />

S<br />

gg -1<br />

P<br />

cm 2 s -1<br />

NR/PEG (4000/4000) – 1 0.96 1.70 1.63<br />

NR/PEG (4000/4000) – 2 5.44 1.89 10.27<br />

NR/PEG (4000/4000) – 3 0.58 1.40 0.81<br />

NR/PEG (4000/4000) – 4 0.57 1.55 0.89<br />

NR/PEG (4000/4000) – 5 0.43 0.85 0.37<br />

Q t (mol%)<br />

12<br />

10<br />

8<br />

6<br />

4<br />

2<br />

D *<br />

0<br />

0 20 40 60 80 100 120 140<br />

t 1/2<br />

e<br />

b<br />

Fig.1. Percentage mass uptake for the block copolymers <strong>in</strong> water at room temperature:<br />

(a) NR/PEG (4000/4000)–1, (b) NR/PEG (4000/4000) – 2, (c) NR/PEG (4000/4000) – 3<br />

(d) NR/PEG (4000/4000) – 4, (e) NR/PEG (4000/4000) – 5.<br />

c<br />

d<br />

a

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