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Nondestructive testing of defects in adhesive joints

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Polymer sample<br />

Table1. Ion uptake by the polymer samples<br />

Uptake <strong>of</strong> metal ions (mM/g)<br />

Na +<br />

K +<br />

Ba ++<br />

Ca ++<br />

Mg ++<br />

NR/PEO-1000 1.20 3.78 2.80 2.24 0.88<br />

NR/PEO-4000 2.12 4.41 3.20 2.86 0.42<br />

ion uptake (mM/g)<br />

4.0<br />

3.5<br />

3.0<br />

2.5<br />

2.0<br />

1.5<br />

1.0<br />

Mg ++<br />

Na +<br />

Ca ++<br />

0.5<br />

1.4 1.6 1.8 2.0 2.2 2.4 2.6 2.8 3.0<br />

ionic radii(A 0 )<br />

K +<br />

Ba ++<br />

Figure 1. Plot <strong>of</strong> ion uptake versus ionic radii<br />

PEO before PEO after<br />

complexation complexation<br />

Fig.2. Complexation <strong>in</strong> polymers

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