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Disclosed is a thermoplastic composition comprising an unreacted mixture of an aliphatic polyester polymer as a continuous phase, polyolefin microfibers as a discontinuous phase encased within the aliphatic polyester polymer continuous phase, and a compatibilizer for the aliphatic polyester polymer

Disclosed is a thermoplastic composition comprising an unreacted mixture of an aliphatic polyester polymer as a continuous phase, polyolefin microfibers as a discontinuous phase encased within the aliphatic polyester polymer continuous phase, and a compatibilizer for the aliphatic polyester polymer and the polyolefin microfibers. The multicomponent fiber exhibits substantial biodegradable properties and good wettability yet is easily processed. The thermoplastic composition is useful in making nonwoven structures that may be used in a disposable absorbent product intended for the absorption of fluids such as body fluids.

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[ What is claimed is:] [1.] A thermoplastic composition comprising:a. an aliphatic polyester polymer in a weight amount that is between about 45 to about 90 weight percent, wherein the aliphatic polyester polymer forms a substantially continuous phase;b. polyolefin microfibers in a weight amount tha

[ What is claimed is:] [1.] A thermoplastic composition comprising:a. an aliphatic polyester polymer in a weight amount that is between about 45 to about 90 weight percent, wherein the aliphatic polyester polymer forms a substantially continuous phase;b. polyolefin microfibers in a weight amount that is between greater than 0 to about 45 weight percent, wherein the polyolefin microfibers have a diameter that is less than about 50 micrometers and the polyolefin microfibers form a substantially discontinuous phase encased within the aliphatic polyester polymer substantially continuous phase; andc. a compatibilizer, which exhibits a hydrophilic-lipophilic balance ratio that is between about 10 to about 40, in a weight amount that is between about 7 to about 25 weight percent, wherein all weight percents are based on the total weight amount of the aliphatic polyester polymer; the polyolefin microfibers, and the compatibilizer present in the thermoplastic composition.