Most likely no, it is not possible. If you remove the laptop keyboard from the laptop you will notice the connector ribbon. You would need to find an external keyboard that took this type of connection or you'd need to find an adapter (as pointed out in @billc.cn comment) that would convert the proprietary adapter to a standard USB/PS2 keyboard adapter. Ultimately, if you managed to do that, you'd have to custom make a container for the keyboard so that it sat properly and ergonomically for usage.
If you want to do it as a side-project and invest time and money to learn and solder and reasearch, it's definitely a possibility, but for practice, no it's not.