Biodegradable polyester fiber having excellent thermal stability and strength, and method for producing same
A biodegradable and manufacturing method technology, applied in the field of biodegradable polyester fiber with excellent thermal stability and strength and its manufacturing field, can solve the problems of increased energy consumption and waste, reduce energy consumption and simplify production Equipment, effect of high fiber strength
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[0058] Examples are shown below to describe the present invention more specifically, but the present invention is not limited to these Examples.
[0059] The evaluation of the obtained fiber was implemented by the following method.
experiment example 1)
[0060] (Experimental example 1) "Dry heat shrinkage rate"
[0061] As the mechanical properties of the PHA fibers after the heat treatment, thermal stability was evaluated by dry heat shrinkage. As this evaluation standard, the shrinkage rate after hanging the PHA fiber in the unloaded state in hot air at 100°C for 30 minutes was measured, and if the shrinkage rate was less than 10%, it was marked as ○, and if it was 10% or more and less than 20%, it was marked as △, if it is 20% or more, it will be marked as ×, and the evaluation will be divided into 3 levels. When this evaluation is ◯, it can be said that it is a PHA fiber excellent in thermal properties.
experiment example 2)
[0062] (Experimental Example 2) "Fiber Strength"
[0063] As the mechanical properties of the PHA fiber, the fiber strength was evaluated by the maximum breaking strength according to JIS-L1015 using a Tensilon universal testing machine RTC-1210A manufactured by A&D Corporation. As this evaluation standard, if the maximum breaking strength is 2 cN / dtex or more, it is marked as ○, if it is 1.5 cN / dtex or more and less than 2.0 cN / dtex, it is marked as △, and if it is less than 1.5 cN / dtex, it is marked as ×, and divided into 3 level to evaluate. When this evaluation is ◯, it can be said that it is a PHA fiber having excellent fiber strength.
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